Transform the following sentences. 

1. I have to phone Mike tonight or he'll sell the car someone else. (Unless)

2. John is giving me a lift. Otherwise, I wouldn't be able to visit you. (But for)

3. I should have taken that job in Canada last year. (only)

4. Will you ever think about finding a flat of your own? (time)

5. Why didn't you tell me yourself that you were leaving? (I'd rather)

6. Tom didn't wear a coat and caught a cold. (If)