问题描述：
it _hard when you leave home
Awill be raining
B will have been raining
C will be rained
D will have rained
I would have come sooner ,but I ——that you were waiting.
didn't know 还是 hadn't known?
求详细解释!
Awill be raining
B will have been raining
C will be rained
D will have rained
I would have come sooner ,but I ——that you were waiting.
didn't know 还是 hadn't known?
求详细解释!
问题解答：
我来补答展开全文阅读