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.