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.

The First and Zero Conditionals are used in English grammar to express different types of conditions and consequences. Let's correct your sentences according to these grammar rules.

First Conditional (used for real or possible situations in the future):

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

Zero Conditional (used for general truths or things that always happen under certain conditions):

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

These corrections reflect the proper use of the First and Zero Conditionals in English grammar.