Ответ:
- 1. You (ты) should remember to say "please" and "thank you".
- 2. He should wear on his jumper if he is cold.
- 3. She should take a hat when she is on the beach.
- 4. It should eat five times a day because it is very little.
- 5. We should help our grandparents.
- 6. You (вы) should apologise if you push someone.
- 7. They should put off their shoes when they enter someone's flat.
