How to practice: This set collects only the Fill in the Blank 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
The city council approved a new plan to _____ the public transportation network by adding three new metro lines.
Show Answer
Correct: expand
Q2 · Fill in the Blank
Urban _____ has become a major challenge as more people move from rural areas into cities seeking work.
Show Answer
Correct: sprawl
Q3 · Fill in the Blank
The local government introduced strict zoning _____ to prevent residential and industrial areas from overlapping.
Show Answer
Correct: regulations
Q4 · Fill in the Blank
A significant _____ of the city's annual budget is allocated to maintaining roads, bridges, and public facilities.
Show Answer
Correct: proportion
Q5 · Fill in the Blank
City planners are working to improve _____ by creating more pedestrian zones and cycling paths in the downtown area.
Show Answer
Correct: accessibility
Q6 · Fill in the Blank
The _____ of affordable housing is one of the most pressing issues facing major cities around the world.
Show Answer
Correct: shortage
More fill in the blank sets at other levels · Browse the full DET question bank