来自刘晓杰的问题
关于have和did用法的英语问题A:Youcan'tsmokehere.Thesignsays"Nosmoking".B:Sorry.I____(didn'tsee/haven'tseen)it.答案是didn'tsee还是haven'tseen,理由是什么呢?
关于have和did用法的英语问题
A:Youcan'tsmokehere.Thesignsays"Nosmoking".
B:Sorry.I____(didn'tsee/haven'tseen)it.
答案是didn'tsee还是haven'tseen,理由是什么呢?
1回答
2020-05-31 08:22