1) If he doesn't wear his coat, he will be cold.
If you do exercises, you get fit.
If Peter comes back soon, we will have dinner together.
2) If I were you, I would eat lots of vegetables.
If he was here? he would help us.
If she had a toothache, she would go to the dentist.
3)You shouldn't eat too many sweets.
He should exercise more.
4)We don't have to buy bread.
I have to get up early.