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

Zero Conditional:

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

First Conditional:

• Our teacher will be happy if we answer all the questions correctly.