СРОЧНО ДАМ 50 БАЛЛОВ​

Ответ:

1. If we write tests, we don't use calculators.
2. If you take your mobile phone into class, it must be turned off.
3. If David give up smoking, he will be healthier.
4. If I am going to be late, I will feel bad in the morning.
5. If I knew the rules of ice hockey, I would enjoy it.
6. If my dad had more free time, we would take up a sport together.

Объяснение: