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. 3.1 (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. If I (to find) his phone number, I (to call) him tonight. If I (to wear) this hat, I (to look) like an old man. If I (to find) her address, I (to send) her an invitation. 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.

Sure! Here are the sentences completed with the correct forms of the verbs for the First Conditional and Zero Conditional structures: ### First Conditional 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 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. Feel free to ask if you have any questions or need further assistance!