Bài 12: Chọn should/ must/ musn't/ have to/ don't have to để điền vào cho trông.

1.  I don't think you ……………………eat so much chocolate. It's bad for your health.

2.Children……………………behave well when they're in class.

3.  If you drive a car, you…………………… stop at marked crossings.

4. I think waiters ………………………try to be pleasant with customers.

5. Some works ……………….wear hard hats because their jobs are considered dangerous.

6. If you feel sick, you………………….stay at home. It's better for you.

7. Police officers…………………..wear a uniform.

8. I………………do my homework. My teacher always checks if we have done the exercises.

9. I ……………….get my hair cut. I don't like it so long.

10. We………………go home. My mother has told me to arrive at ten o'clock.

11. I…………….study hard. I want to pass the exam.

12. In Spain, children…………… goto school until they're 16.

13.You………………… phone every day, darling!

14. You……………….accept things from strangers!

15.When you go into  a clothes shop, you ………………………have to buy something. You can just look.

16. You ……………steal thingsfrom shops.

17. Children…………..pay bills

18. Children …………………..eat junk food every day.