Помогите найти ошибки в предложениях и исправить их!
1. I can’t to lift this box. It is really heavy.
2. Do he have to work this weekend
3. You should change your office chair. It is not good for your back.
4. They doesn’t have to wear school uniform.
5. Do you should take a coat with you?
6. Can you help me paint the hall this weekend?
7. Are you sure you have take all your certificates to the interview?