Раскройте скобки, употребив подходящую глагольную форму в сложноподчиненных

Раскройте скобки, употребив соответствующую глагольную форму в сложноподчиненных предложениях с придаточным условия либо времени.
1. Martha will go to the Zoo tomorrow if she (be) a good girl.
2. Tell Mary she must visit the Tower if she ever (go) to London.
3. If Clyde had worked harder he (pass) the exam.
4.If I had known that you were leaving I (buy) you a present.
5. Michael (stay) with us before Mr Punch returns.
6. Julian will be ill if he (eat) so much.
7. Anthony (come) if he had known about the troubles.
8. If Leonora were older, she (have) more sense.
9. Mabel will be very angry if you (break) any more plates.
10. Leslie will go to a cafe when the concert (be) over.