№8.
1) If the weather is fine, I'll go to the beach.
2) We'll do it when John comes.
3) When Mary rings me up, I'll talk to her.
4) If it rains, we'll stay at home.
5) If it doesn't rain, we'll go for a walk.
№9.
1) Mike is going to ski.
2) Dick is going to skate.
3) Melissa is going to dive into the pool.
4) Jack and Bob are going to play football.
5) Dan is going to watch TV.
6) Alice is going to play the piano.