Объяснение:

1. if you have done your homework, you can go for a walk.

2.if you feel unwell, go to the first-aid post

3. If she does not come to school tomorrow, she will have to be expelled.

4. If we do not do our homework, we will get a deuce.

5. If you need help, you can always ask a friend.

с частицей "wether" не знаю