If i have enough time, i will call my friend.
My sister won't (will not) go to the cinema, if she doesn't do her homework.
My best friend will help me, if i ask her.
If my parents buy a new car, we will travel around the country.
If i don't stop eating too much, i will become overweigh.
Объяснение:
гл. часть предлож. ( что будет) -- will, условие -- Present Simple.