Study the rules. Fill in the gas with the right verb forms
Spoiler
We use Zero Conditional to talk about general truths and scientific facts. Present simple is used in both clauses.

If + noun + Present Simple, noun + Present Simple

Example:

If the sun shines, the grass grows.

We use First Conditional to talk about what will happen in the future under certain conditions.

If + noun + Present Simple, noun + Future Simple

Example:

If the lesson continues, we will have a test.

1. If you [ ]
   too much, you [ ] tired.
2. She [ ] silent if she [ ] her homework.
3. If Sarah [ ] with Alex, he [ ] sad.
4. My grandma always [ ] a present if she [ ] here.
5. If I [ ] James, I [ ] him about the concert.
6. She [ ] an allergy if she [ ] too many sweets.
7. We [ ] late if we [ ] a taxi.