问题描述：
have been used 与 have used
The salt ___(use)up already.I have to go and buy some
为什么要填 have been used 而不能是 have used?
The salt ___(use)up already.I have to go and buy some
为什么要填 have been used 而不能是 have used?
问题解答：
我来补答展开全文阅读