How to practice: This set collects only the Complete the Sentence question type from the real DET (Duolingo English Test) — DET Reading & Vocabulary questions. No grading, no timer — solve it yourself, then tap each question to reveal the answer or model response.
Q1 · Fill in the Blank
City officials decided to _____ the old industrial district into a mixed-use neighborhood with shops, homes, and parks.
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Correct: transform
Q2 · Fill in the Blank
The new subway line is expected to significantly reduce _____ on major highways during rush hour.
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Correct: congestion
Q3 · Fill in the Blank
Community leaders stressed the importance of _____ between residents and city planners when designing new public spaces.
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Correct: collaboration
Q4 · Fill in the Blank
Investors are _____ in the newly developed waterfront district, attracted by rising property values and modern infrastructure.
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Correct: interested
Q5 · Fill in the Blank
The city's waste management strategy aims to _____ the amount of landfill waste by encouraging recycling and composting.
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Correct: minimize
Q6 · Fill in the Blank
A well-designed public transit system can make a city more _____ by connecting neighborhoods and reducing the need for private cars.
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Correct: equitable
More complete the sentence sets at other levels · Browse the full DET question bank