Complete the gaps. Use the short form of the verb in the interrogative sentences.

1. Dad had a car accident because the roads were slippery.
If the roads ... \(not/be\) so slippery, Dad ... \(not/have\) a car accident.
2. A: Unless you ... \(use\) the proper equipment, you ... \(hurt\) yourself.
B: I know. I always wear a helmet and pads.
3 A: What ... \(you/do\) if you saw an injured man on the pavement?
B: I ... \(help\) him.
4. A: Thanks for lunch! I’ll go swimming now.
B: If I ... \(be\) you, I ... \(wait\) an hour.
5 Unless you ... \(wear\) warmer clothes, you ... \(catch\) a cold.