问题描述：
— Don't put the waste on the ground,young man.— Oh,I'm sorry.I ________the dustbin there． A.
— Don't put the waste on the ground,young man.
— Oh,I'm sorry.I ________the dustbin there．
A.hadn't seen B.didn't see C.can't see D.wasn't seeing
— Don't put the waste on the ground,young man.
— Oh,I'm sorry.I ________the dustbin there．
A.hadn't seen B.didn't see C.can't see D.wasn't seeing
问题解答：
我来补答展开全文阅读