Question

【题目】— Must I finish that work today?
— No, you _____. You may finish it in three days.
A.mustn't
B.needn't
C.shouldn't
D.couldn't

Answer 1

【答案】B
【解析】句意：——我必须今天完成工作吗？——不，你不必，你可以3天内完成。回答must，肯定用must或者have to。否定回答用needn't或don't have to。而mustn't表示禁止，意思是“千万不要”故选B。