How do I enter an answer?

Type the complete word rather than only the missing letters. The checker ignores capitalization and spaces at the start or end, but the spelling must match the intended answer.

How many completion questions can I practise?

There are 24 original questions in three sets of eight, with explanations available after submission.

Original DET skill practice

Duolingo Fill in the Blanks practice: 24 questions

Type the complete missing word using the sentence meaning and visible letters. This exercise contains three sets of eight original sentence-level completions. Submit a set to reveal the answer and explanation; these focused drills do not reproduce a full official C-Test passage.

Type the complete word for each blank. The visible letters and the rest of the sentence provide clues. Answers ignore capitalization and surrounding spaces.

Choose a question set

0 of 8 answered

Question 1: The museum off___ free admission on Fridays.

Question 2: Regular exercise can imp____ concentration.

Question 3: The researcher collected evi_____ before reaching a conclusion.

Question 4: The path was clearly mar___, so visitors found the garden.

Question 5: Many small changes can gra______ produce a large result.

Question 6: The council built a bridge to make the island more acce______.

Question 7: The team repeated the expe______ to check its findings.

Question 8: The teacher gave a bri__ explanation before the activity.

Read the task guide View DET progress

Your answers and set results are saved in this browser so you can return later.

Review the reason for a wrong completion

Check whether the problem was spelling, word meaning, or grammar. A word may fit the topic but use the wrong tense or form. Copy the complete corrected sentence, explain the clue that determines the answer, and write another sentence using the same pattern.

Frequently asked questions

How do I enter an answer?: Type the complete word rather than only the missing letters. The checker ignores capitalization and spaces at the start or end, but the spelling must match the intended answer.
How many completion questions can I practise?: There are 24 original questions in three sets of eight, with explanations available after submission.

Learning material by TypoGrammar. Updated September 28, 2026. Consult the official DET site for current test instructions and requirements.

This is original, unofficial skill practice. The result is your score on this set, not a predicted DET score. TypoGrammar is not affiliated with or endorsed by Duolingo.