Many pf stars_____ ,because they are for away from us.
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