Question

【题目】To keep safe, drivers aren’t supposed to drink before driving.

A. aren’t willing to B. shouldn’t C. aren’t sure to D. don’t have to

Answer 1

【答案】B

【解析】句意“为了保持安全，司机在开车前不应该喝酒”。A.不愿意；B.不应该；C.不确定；D.不必。be not supposed to do不应该，故选B。