Вопрос по английскому языку:

Выберите правильную форму глагола и переведите предложения на русский

1) If Pete checks his work, he (not to have) many mis¬takes.


2) . If you _____________(to do) exercises regularly, you would pass the test.


3) If I (to find) __________ that letter, I’ll show it to you.