Free Duolingo Read and Complete Practice

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1

Practice Set 1

Foundational vocabulary. Complete the missing letters.

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2

Practice Set 2

Focus on common nouns and verbs in context.

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3

Practice Set 3

Advanced logic. Fill the gaps in academic texts.

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4

Practice Set 4

High-speed challenge. Accuracy and timing focus.

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5

Practice Set 5

Mastery Level. Complex sentence structures.

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6

Practice Set 6

Expert Level. Midnight challenge.

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Meta Description: Master the DET with free read and complete practice — beginner to advanced C-test exercises with answer keys, timed drills, and expert tips. Your DET C-test exercises start here.

Introduction

The Read and Complete task is one of those DET sections that students either breeze through — or completely freeze on. You’re handed a passage with missing letters scattered through the text, and you have exactly three minutes to restore them all. No word bank. No multiple choice. Just you, a half-broken paragraph, and the clock.

What makes it hard isn’t the vocabulary. It’s the speed. Most students know what word belongs in the blank — they just can’t process context fast enough under pressure. That’s a reflex problem, not a knowledge problem. And reflexes are built through repetition.

This page gives you free, level-based read and complete Duolingo practice across six modules — from beginner to advanced. Each one mirrors the real test format, comes with full answer explanations, and is designed to be done in timed conditions. If you want free Duolingo reading practice that actually prepares you for test day, you’re in the right place. Come back to these as often as you need to. That’s the whole point.

Choose Your Read and Complete Practice Level

Work through the exercises in the grid above in order the first time. After that, repeat any module where you’re still hesitating. The goal isn’t perfection on the first try — it’s getting faster and more confident on every attempt.

🟢 Beginner Module 1: Daily Routines

Instructions: Fill in the blanks using context and grammar clues. Each blank represents a missing word or a word with missing letters. Try to complete the passage without pausing to think too long on any single blank.
⏱ Target time: 3 minutes

Every morning, Maria wakes up at six o’clock. She ______ (1) a quick shower and then makes breakfast for her family. Her children ______ (2) cereal, but she prefers eggs and toast. After breakfast, she drives them to ______ (3) before going to her job at the local hospital. Maria works as a n______ (4), so her days are long and demanding. By the time she gets home in the evening, she is usually very t______ (5). Still, she always finds time to read a story to her kids b______ (6) they go to sleep.
Answer Key:
  1. takes — “takes a shower” is a fixed collocation. “Has” is also accepted.
  2. prefer / love / eat — The contrast word “but” signals that her preference is different.
  3. school — Logical context clue: children go to school before a parent goes to work.
  4. nurse — The “n” starter plus the context of “hospital” makes this clear.
  5. tired — “t” + the phrase “long and demanding days” points directly to this.
  6. before — “b” + the logical time sequence (reading before sleep) clinches it.

💡 Pro Tip: In the real DET Read and Complete format, roughly half the word is removed. So “nurse” might appear as “nur___” and “tired” as “ti___”. Practice reading with both full blanks and partial words — this module used both on purpose.

How did you do? If blanks 4, 5, and 6 slowed you down, practice reading partial-word passages aloud until the pattern feels natural.

🟢 Beginner Module 2: Weekend Plans

Instructions: Some blanks show only the first letter(s). Use the sentence context to complete each word. Don’t second-guess your first instinct — it’s usually right.
⏱ Target time: 3 minutes

This Saturday, Tom and his friends are planning to visit the new science museum downtown. They have been talking ab______ (1) it for weeks. The museum has a special ex______ (2) on space exploration that everyone is excited to see. Tom’s younger sister wants to come too, but she is only five years old, so their parents will br______ (3) her separately later in the afternoon. After the museum, the group plans to have dinner at a re______ (4) near the city center. Tom is looking fo______ (5) to the whole day — it’s the first time in months they’ve all been to______ (6).
Answer Key:
  1. about — “talking about” is a standard verb-preposition collocation.
  2. exhibition / exhibit — “ex” + the context of a museum showing something.
  3. bring — “br” + the logic of parents taking a young child separately.
  4. restaurant — “re” + city context. High-frequency word.
  5. forward — “looking forward to” is a fixed phrase. Memorize: “look forward to + noun/gerund.”
  6. together — “to” + the emotional payoff of the sentence.

💡 Pro Tip: Fixed phrases and collocations (like “looking forward to” or “talking about”) are your fastest wins on this task. When you see the first letter of a word inside a familiar phrase, your brain should complete it automatically — no thinking required.

🟡 Intermediate Module 1: Climate Change

Instructions: This passage covers an academic topic. The vocabulary is more specific, and some blanks require understanding the overall argument, not just the sentence. Read the full passage once before filling in any blanks.
⏱ Target time: 3 minutes

Scientists have been warning for decades that rising global temperatures pose a serious thr______ (1) to ecosystems around the world. One of the most visible con______ (2) of climate change is the melting of Arctic sea ice, which has declined sharply over the past forty years. This loss of ice affects not only polar bears and other arc______ (3) wildlife, but also ocean curr______ (4) that regulate weather patterns far beyond the poles. Governments and ind______ (5) have been slow to respond, in part because the economic costs of reducing carbon emissions appear large in the short term. However, economists increasingly argue that the long-term cost of in______ (6) is even greater. Without urgent col______ (7) action, some of the damage may become irreversible.
Answer Key:
  1. threat — “thr” + “pose a serious ___” is a standard academic collocation.
  2. consequence — “con” + “one of the most visible ___ of climate change.”
  3. Arctic — “arc” + wildlife context. Location was already mentioned.
  4. currents — “curr” + “ocean ___” is a fixed geography term.
  5. industry / industries — “ind” + contrast with “governments.” Two major actors.
  6. inaction — “in” + contrast: costs of reducing emissions vs. costs of not acting.
  7. collective — “col” + “action” — standard phrase in environmental policy.

💡 Pro Tip: Academic passages on the DET often follow a predictable structure: problem → evidence → response → consequence. If you know where you are in that structure, you can predict the type of word that belongs in the blank even before reading it fully.

🟡 Intermediate Module 2: The History of Printing

Instructions: Historical passages can feel dry, but they follow logical cause-and-effect chains. Use that structure as your guide.
⏱ Target time: 3 minutes

Before the invention of the printing press in the mid-fifteenth century, books were copied by hand — a process that was both slow and exp______ (1). Only wealthy individuals or religious in______ (2) could afford to own them. When Johannes Gutenberg dev______ (3) the movable-type press around 1440, everything changed. Books could suddenly be produced in large qu______ (4) at a fraction of the original cost. Literacy rates began to rise as reading material became more widely av______ (5). The spread of new ideas — including those that would fuel the Ref______ (6) — accelerated dramatically. Many historians consider the printing press the single most inf______ (7) invention of the last thousand years.
Answer Key:
  1. expensive — “exp” + contrast with “slow,” describing hand-copying.
  2. institutions — “in” + “religious ___” — monasteries, churches.
  3. developed / devised / designed — “dev” + inventor creating something.
  4. quantities — “qu” + “large ___” — standard collocation.
  5. available — “av” + “more widely ___” — standard collocation.
  6. Reformation — “Ref” with a capital R + historical period.
  7. influential — “inf” + “most ___ invention” — superlative adjective.

💡 Pro Tip: Capital letters inside a blank are a gift. They tell you it’s a proper noun — a name, place, or historical event. Narrow your options fast and move on.

🔴 Advanced Module 1: Behavioral Economics

Instructions: This passage uses complex sentence structures and specialized vocabulary. If a word doesn’t come to you within five seconds, move on and come back. Time management is the main skill being tested here.
⏱ Target time: 3 minutes

Traditional economic theory assumes that people make rational dec______ (1) based on complete information and a clear understanding of their own interests. Behavioral economics challenges this ass______ (2) by demonstrating that human choices are frequently influenced by cognitive bi______ (3), emotional states, and the way options are fr______ (4). For example, people are more likely to choose a product described as “ninety percent fat-free” than one labeled “ten percent fat,” even though both des______ (5) are logically equivalent. This tendency, known as the fr______ (6) effect, illustrates how presentation shapes per______ (7) in ways that bypass rational analysis entirely.
Answer Key:
  1. decisions — “dec” + “make rational ___” — academic collocation.
  2. assumption — “ass” + “challenges this ___” — connects to preceding sentence.
  3. biases — “bi” + “cognitive ___” — core term in psychology.
  4. framed / presented — “fr” + “the way options are ___” — technical term.
  5. descriptions — “des” + “both ___ are logically equivalent”.
  6. framing — “fr” + “___ effect” — loops back to “framed” in blank 4.
  7. perception — “per” + “shapes ___” — how presentation alters how we see things.

💡 Pro Tip: In advanced passages, look for echo words — terms the author introduces early and then repeats or builds on. Blank 4 (“framed”) and blank 6 (“framing”) are the same root word. Spotting these loops makes advanced passages significantly easier.

🔴 Advanced Module 2: AI and Creativity

Instructions: This is the hardest module. The topic is current and conceptually dense. Some blanks require you to understand the author’s argument, not just the sentence. Read quickly but attentively.
⏱ Target time: 3 minutes

The question of whether artificial intelligence can be truly cr______ (1) has sparked intense debate among philosophers, artists, and technologists. Proponents argue that AI systems can gen______ (2) original music, visual art, and written text by identifying and rec______ (3) complex patterns in vast datasets. Critics counter that what AI produces is ultimately im______ (4) — sophisticated re______ (5) of existing human work, without genuine understanding or intent. This debate touches on deeper questions about the nat______ (6) of creativity itself: whether originality requires cons______ (7) experience, or whether it is simply a matter of producing something that no one has produced before.
Answer Key:
  1. creative — “cr” + “truly ___” + topic of the passage.
  2. generate — “gen” + “AI systems can ___ original music”.
  3. recombining / recognizing — “rec” + “identifying and ___”.
  4. imitative / imitation — “im” + “ultimately ___” — critics’ position.
  5. recombination / rearrangement — “re” + “sophisticated ___ of existing human work”.
  6. nature — “nat” + “deeper questions about the ___ of creativity”.
  7. conscious — “cons” + “whether originality requires ___ experience”.

💡 Pro Tip: When the passage sets up a debate (“proponents argue… critics counter…”), the blanks on each side of the argument will match the tone of that position. Proponents’ blanks tend toward capability words; critics’ blanks tend toward limitation words. Use the argument structure as a map.

What is the Read and Complete Question?

The 2026 Format vs. The Old “C-Test”

If you’ve been searching for duolingo c test practice free resources and keep finding information about something called the “C-Test,” you’re looking at the same thing under a different name. Duolingo rebranded the task as “Read and Complete,” but the core mechanic hasn’t changed: you receive a passage where roughly half of certain words have been removed, and you restore them using context, grammar, and vocabulary knowledge.

The original C-Test format, developed by linguists in the 1980s, removed the second half of every other word in a passage. Duolingo’s version is slightly more curated — blanks are placed where they test meaningful language knowledge rather than strictly following an every-other-word rule. What this means practically is that the blanks tend to fall on content words (nouns, verbs, adjectives) rather than function words (the, of, in), making each blank a genuine test of comprehension.

One other thing worth knowing for 2026: the test is adaptive. If you complete early passages quickly and accurately, the difficulty of later passages increases. These c-test English exercises are organized by difficulty for exactly that reason — so you can experience what that difficulty shift feels like before test day.

Why Practice This Section Daily?

Building Contextual Vocabulary Reflexes

There’s a concept in cognitive psychology called automaticity — the point at which a skill no longer requires conscious attention. Skilled readers don’t sound out every word; they recognize whole word shapes and phrases in milliseconds. That same automaticity is what you’re building when you do these exercises repeatedly.

Every time you encounter “looking fo___” and your brain immediately produces “forward,” you’re reinforcing a neural pathway. The tenth time you see that pattern, you won’t think about it at all — your fingers will have typed it before your conscious mind engaged. That’s the goal.

This matters enormously for the three-minute time limit. Students who score well on Read and Complete aren’t necessarily smarter or better at English. They’ve simply done enough timed repetition that their pattern-recognition runs in the background while they’re reading ahead. Free Duolingo reading practice done daily — even just one module — builds this faster than any grammar book.

Specific things that improve with daily practice:

  • Collocation recognition: “make a decision,” “take a shower,” “pose a threat” stop requiring thought.
  • Suffix and prefix awareness: Seeing “con___” inside a sentence about results, you instantly think “consequence” or “conclusion” — not because you analyzed it, but because you’ve seen it in context dozens of times.
  • Argument structure awareness: Academic passages follow predictable logical patterns. Daily exposure makes those patterns feel familiar, which speeds up comprehension dramatically.

Mastering the 3-Minute Time Limit

Three minutes sounds reasonable until you’re actually doing it. A passage with seven blanks in a hundred words, where you need to read for context, parse partial words, and type accurately — all while the clock is running — is harder than it sounds.

A Pacing Strategy That Works:

  • First 30 seconds: Read the entire passage without filling anything in. Get the topic and tone. You’ll be surprised how many blanks become obvious after one full read.
  • Next 90 seconds: Fill in every blank where you feel confident. Don’t stop. Don’t second-guess. Move.
  • Final 60 seconds: Return to any blanks you skipped. This is when educated guessing matters — a partial word is always better than nothing.

Most people who run out of time do so because they stop at a hard blank and try to solve it in place. Don’t. Mark it, move on, and come back. One blank is never worth the time cost of abandoning your pacing rhythm.

Frequently Asked Questions

Is the C-Test the same as the Read and Complete task? +
Yes. Duolingo officially renamed the task “Read and Complete,” but the format is the same as the classic C-Test used in academic language assessment: you restore missing letters or word halves within a continuous passage. If you find older prep materials that reference the C-Test, they’re directly applicable to what you’ll see on the current DET.
How many Read and Complete questions are on the test? +
Typically, you’ll encounter four to six passages in the Read and Complete section, with each passage containing between three and six blanks. The exact number varies because the test uses an adaptive algorithm — if you’re performing well, it may give you more passages at higher difficulty.
How much time do I get for the Read and Complete section? +
You have exactly three minutes per passage. This is a hard limit — the passage advances automatically when time expires. There is no way to return to a previous passage once it’s gone.
Does it matter if I use American or British spelling? +
Both are accepted. The DET’s answer key includes common spelling variants, so “colour” and “color,” “centre” and “center,” “organise” and “organize” are all marked correct. That said, pick one and stay consistent throughout a passage.
How is “Read and Complete” different from “Fill in the Blanks”? +
“Read and Complete” asks you to restore missing letters within a flowing passage. “Fill in the Blanks” typically presents isolated sentences with a word bank to choose from. Read and Complete tests deep contextual understanding — you have to hold the meaning of the whole passage in your head while working on each word.

Looking for more DET practice? Explore our full DET practice library, Speaking sample responses, and Interactive Listening drills on the Main Dashboard.

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