Question

【题目】You ______ smoke. You are only 14 and it isn't allowed.
A.mustn't
B.don't have to
C.needn't
D.won't

Answer 1

【答案】A
【解析】句意：你不要吸烟，你才只有14岁，不允许吸烟。mustn't禁止，不要；don't have to不必；needn't不需要，没有必要；won't不会。根据句意可知，14岁的青少年禁止吸烟，故应选A。