If susan (pass) his exam. parents (buy) her a new mobile. mary (be) late for classes. if jim (learn) to be polite.

1) if Susan passes his exam parents will buy her a New mobile

2) Mary will be late for classes ( или Mary is late for classes) - контекст не понятен, поэтому и время непонятно какое ставить

3) If Jim learns to be polite