1 What would you do if you had a stomachache?
2 If I were you, I wouldn't lie to my parents.
3 If you share your problems with your friends you will feel better.
4 If we don't get enough sleep, we will feel tired tomorrow.
5 She will miss the train if she doesn't leave now.
6 If you study hard, you will pass the exam.
7 If I found a wallet, I'd take it to the police.
8 If the weather is nice tomorrow, we will go to the park.
9 I would join a gym if I had free time.
10 If we have a party, we will invite you.