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Exercise I: Chọn phương án đúng.
1. You don't look well. You
A. could
2. She
A. could have stayed
C. had to stay
3. You
C. are to
home yesterday because her little son was sick
B. need to
A. should not
4. Whose car is this? - It
A. could
see a doctor.
5. Though he was ill and weak, he
A. was able to
disturb him during his work!
B. needn't
C.mustn't
D. don't have to
be Anton's. I think I saw him driving a red car like this one.
B. might
C.must
D. would
A. Can you
7. The windows look clean. You
A. are not to
B. must have stayed
D. should have stayed
B. might
lending me your CD player for a couple of days?
B. Would you mind
get out of the burning building.
C. could
B. needn't
C. Would you
wash them.
D. should
C. don't have to
D. should
D. Could you
D.mustn't