问题描述:
用括号说给的动词的适当形式补全对话
hello! what's happened ?Didn't you catch your train?
If I__________(catch) it I ________(not ,be) here, should I ?
hello! what's happened ?Didn't you catch your train?
If I__________(catch) it I ________(not ,be) here, should I ?
问题解答:
我来补答展开全文阅读