Put the verbs in brackets into the correct tense.
1) I will help you with the shopping later if i (have) time.
2) Unless you (leave) now, you`ll miss the train.
3) If i were you, I (not/buy) a second-hand car.
4) If only it (stop) snowing, we could go outside.
5) Paul had a car accident yesterday. He wishes he (be) more careful.
6) If William (pay) the electricity bill, it wouldn`t have been cut off.
7) Sarah wishes she (not/have to) work so hard every day.
8) I wish you (not/make) a mess in the kitchen every time you cook something.