高中情态动词-That must be a terrible mistake .-No.I don't think it __a mistake .A.must be B.mustn't be C.can be D can't be,

分类: 作业答案 • 2022-05-16 20:52:47

问题描述：

高中情态动词
-That must be a terrible mistake .-No.I don't think it __a mistake .A.must be B.mustn't be C.can be D can't be,

答

c
think否定提前变成don't think了
can't 否定推测
must表猜测不能用否定,只能用于肯定中