题目内容：

--- Must I hand in my homework today?---- No,________.
A.you need B.you must C.you mustn’t D.you needn’t
选d吗

优质解答

MUST的否定有3种形式：1）mustn't 必须不,不能 You mustn't jump the queue.你不能插队.2）needn't 不必楼主给的例句是这种类型3）be not 不是如果must表判断（肯定是 的意思）时He must be good at maths,isn't he?...