A.must be B.may have been C.can have been D.could be ,为什么呢,
A.must be B.may have been C.can have been D.could be ,为什么呢,
HELP!A might have been B might be C must be D can be
选词填空(can't have been\must be\must have been\can't be \may ha
有must/could/can/may/maight have been done吗
can be done was done could be done must have been done will
be,must be,can't have been,must have been吗
在英语里coms been、must been和may been和come have been、must have be
must have been done/must be done
____your mother____there?A.have;been B.have;been to C.has;be
there must have been a storm there.__.a there couldn't be b.
英语翻译A.may be B.can be C.maybe D.must其实也就是 may be 和maybe的区别
英语翻译A.can't have been B.mustn't have been C.shouldn't have b