Bài 12. Chọn và điền từ thích hợp để hoàn thành câu dưới đây
Must ; don't have to ; might ; should ; mustn't ; shouldn't
1. You ______ drive on the paverment. It's illegal.
2. You_______say that. It's not nice .
3. I _______go to work tomorrow because it's a public holiday.
4. I _______ buy this CD , I'm not sure.
5. You_______eat more vegetables. They're good for you.
6. You_______be 18 before you can buy alcohol.