Sam would help the poor if he____(be) rich.
查看答案
If I hadn’t lost my cellphone, I____(contact) you yesterday.
There is a good social life in the village, and I wish I____(have) a second chance to become more involved.
They might have found a better hotel if they____(drive) a few more kilometers.
If the new safety system____(put) to use, the accident would never have happened.