Many pf stars_____ ,because they are for away from us.A.may not waitB.can't be seenC.mustn't be seen为什么选B?A.是may not see

分类: 作业答案 • 2022-01-02 15:48:08

问题描述：

Many pf stars_____ ,because they are for away from us.
A.may not wait
B.can't be seen
C.mustn't be seen
为什么选B?
A.是may not see

答

不能被我们再看见.必须要用被动语态所以A排除.mustn't表示禁止,can't表示不可能所以选B