First Conditional.
1.Our teacher (to be) happy if we (to answer) all the questions correctly.
2.If they (to have) enough money, they (to buy) a new car.
3.I (to be) very angry with Nick if he (to forget) my CD again.
4.You (to get) very wet if you (to walk) in this rain.
5.We ( to pass) the exam if we (to study) hard.
6.If the weather (to be) not too bad tomorrow, we (to play) football.
7.If we (to learn)more about history, we (not to be) afraid of the test.
8.If I (to find) his phone number, I (to call) him tonight.
9.If I (to wear) this hat, I (to look) like an old man.
10.If I (to find) her address, I (to send) her an invitation.


Zero Conditional.
1. If people (not to drink), they (to die).
2. If you (to eat) bad food, your health (to become) worse.
3. If you (not to feel) well, you (to go) to the doctor.
4. If babies (to be) hungry, they (to cry).
5. If I (to be) thirsty, I always drink fresh water.
6. If Tom (to have) a birthday party, he usually (to invite) a lot of friends.
7. If I (to have) a headache, my mother usually (to give) me some medicine.
8. If I (to cough), I (to drink) hot milk with honey.
9. If you (to fly) by a budget airline, you (to have) to pay for your drinks and food.
10. If we (to be) late for school, our teacher (to get) angry.