1. If you wear sandals in the mountains, you'll slip on the rocks.
2. If Rita forgets her homework, the teacher will give her a low mark.
3. If they go to the disco, they will listen to loud music.
4. If you wait a minute, I'll ask my parents.
5. If you send this letter now, she'll recieve it tomorrow.
6. If I do this test, I'll improve my English.
Объяснение:
В части предложения с условием if используем Present Simple, во второй - will+Infinitive
