Question

C. Present or Future Simple?
1. I should like to know if he (to join) us next week. 2. I'll be glad if he (to join) us next time. 3. I'll be upset if he (not to join) us next time. 4. I wonder when it (to stop) raining at last. 5. We shall be happy when it (to stop) raining at last.

Answer 1

1)will join
2)joins
3)doesn`t join
4)will stop
5)stops