срочно!!!
задание на фото!

Ответ:

1. They must start studying for their exam this weekend.

2. I think that they should talk to their teacher about the last exam.

3. They shouldn't leave the school next year - it's not a good idea.

4. They should tidy the classroom before they go on holiday.

5. They don't have to stay at school in the afternoon - they can go home.