LÀM BÀI: EXERCISE 31.4
Vui lòng đăng nhập và đăng ký (miễn phí) khoá học (EG2-A) English Grammar 2-A để nộp bài và xem kết quả.
Complete the sentences with mustn't, don't have to or doesn't have to.
1.
I don't want anyone to know about our plan. You tell anyone.
2.
Richard wear a suit to work, but he usually does.
3.
There's a lift in the building, so we climb the stairs.
4.
I promised Kate I'd call her tomorrow. I forget.
5.
I'm not very busy. I have a few things to do, but I do them now.
6.
Sophie likes weekends because she get up early.
7.
You be a good player to enjoy a game of tennis.
8.
You should keep trying to find a job. You give up.
9.
I eat too much. I'm supposed to be on a diet.
10.
We have plenty of time before our flight. We check in yet.
