1. If it is hot tomorrow, I'll go swimming.
2. If the weather is nice tomorrow, we will go on a picnic.
3. If I go to Vung Tau, I'll buy you a present.
4. If Adam finishes his homework, he will have enough time.
5. If I don't get a letter tomorrow, I'll call my aunt.
6. If I get a work permit, I'll stay for another month.
7. If there is a serious drought, vegetables will die.
8. If I have time, I'll come and see you.
9. If you tell the truth, people will trust you.