Pls! 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.

1. I should like to know if he WILL JOIN  us next week. 2. I'll be glad if he JOINS us next time. 3. I'll be upset if he DOESN'T JOIN us next time. 4. I wonder when it WILL STOP raining at last. 5. We shall be happy when it STOPS raining at last.