1) If it rains, we won't go out.
2) It's cold! I'll turn on the heating.
3) If the weather is good, we'll go on a picnic.
4) You can ask John that question when he comes.
5) I think Manchester will win the match.
6) Maybe I'll be a writer when I grow up.
7) If I hear anything about the accident, I'll let you know.
8) He always locks the door when he leaves for work.