Here are the completed zero and first conditional sentences:
1-If you **do not drink**, you **die**.
2-If he **goes** to Paris, he **will see** the Eiffel Tower.
3-If she **does not apologize**, I **will not speak** with her any more.
4-If you **eat** too many hamburgers, you **will get** fat.
5-If I **miss** the bus, I **will arrive** late.
6-If you **work** hard, you **will succeed**.
7-When you **have** a toothache, you **will go** to the dentist.
8-If you **go** to the doctor, I **will go** with you.
9-I **will make** a snowman if it **snows**.
10-When it **rains**, I **will take** my umbrella.
11-If you **are** late, I **will wait** for you.
12-The baby **cries** if he **is** hungry.
13-If I **get** the job, I **will feel** happy.
14-If we **do not hurry up**, we **will miss** the last train.
15-If John **is not** at home, I **will come** back later.
16-When the weather **is** sunny, the children **will play** outdoors.
17-**Will** you **go** to Susan's party if she **invites** you?
18-When my mom **helps** me, I **will be** grateful.
19-If they **love** each other, they **will get** married.
20-If you **do not wear** a coat, you **will catch** a cold.
21-If you **are** vegan, you **will not eat** eggs.
22-If you **trust** on me, I **will not let** you down.