问题描述：
A:I can’t find my bag.Have you seen it?
0 - 离问题结束还有 14 天 23 小时
A:I can’t find my bag.Have you seen it?
B:No.You _______________________________________(一定是把它放在) behind the door.
I must have put it 如果把have
0 - 离问题结束还有 14 天 23 小时
A:I can’t find my bag.Have you seen it?
B:No.You _______________________________________(一定是把它放在) behind the door.
I must have put it 如果把have
问题解答：
我来补答展开全文阅读