问题描述:
He _writing the paper now.He hadn't written a single word when i left him ten minutes ago.
A.shouldn't be B.can't have finished C.can't be D.mustn't have finished
我选的是A 答案为什么是b
A.shouldn't be B.can't have finished C.can't be D.mustn't have finished
我选的是A 答案为什么是b
问题解答:
我来补答展开全文阅读