1. Our teacher will be happy if we answer all the questions correctly.
2. If you fly by a budget airline, you have to pay for your drinks and food.
3. If they have enough money, they will buy a new car.
4. If Tom has a birthday party, he usually invites a lot of friends.
5. I will be very angry with Nick if he forgets my CD again.
6. You will get very wet if you walk in this rain.
7. If I cough, I drink hot milk with honey.
8. If we are late for school, our teacher gets angry.
9. We will pass the exam if we study hard.
10. If I am thirsty, I always drink fresh water.
11. If babies are hungry, they cry.
12. If the weather is not too bad tomorrow, we will play football.
13. If we learn more about history, we won’t be afraid of the test.
14. If people do not drink, they die.
15. If I find his phone number, I will call him tonight.
16. If you do not feel well, you go to the doctor.
17. If you eat bad food, your health becomes worse.
18. If I wear this hat, I will look like an old man.
19. If I find her address, I will send her an invitation.
20. If I have a headache, my mother usually gives me some medicine.