Verified answer

1. If I don't see Martin's sister, then I won't give her his wallet.

2. If Nathan gets food poisoning, then I won't pass the exam.

3. If I didn't use this shampoo, my hair would not turn green.

4. If Luke's train had been delayed, I wouldn't have arrived at school on time.

5. If Ella had not helped her father fix the car as a child, she would not have become a mechanic.

6. If I had an eye test, I would know that I need glasses.

надеюсь всё правильно<3