1. The car__(won't roll) back as long as you put the brake on.
2. I'd have sent you a post card, if i __(had had) your address.
3. It's good that Ann reminded me about Tom's birthday. I___(would have forgotten) if she hadn't reminded me.
4. I___(wouldn't/buy) that coat if were you.
5. If students__(had relied) on computers, they wouldn't have jogged their brains.