1. —I’d like to leave for Hong Kong during Christmas.
— , for the exam is coming.
A. Take it easy B. Don’t mention it
C. No problem D. You’d better not
2. To test danger of playing computer games without enough sleep, scientists did
experiment.
A. a; / B. a; the C. the; an D./; an
3. Sometimes we be busy shopping in a supermarket, for it’s more convenient to purchase online nowadays.
A. needn’t B. mustn’t C. shouldn’t D. can’t
