英語專業四級考試語法詞彙練習題(5)

　1. Mike, you____play with fire. You____ burn yourself.
A. won cant
B. mustn may
C. dont have to; must
D. have got to; shouldnt
2. You____see the doctor, Joe. You dont look very well.
A. must
B. shall
C. may
D. can
3. Must I clean the window now?
No, you____
A. mustnt
B. neednt
C. cant
D. may not
4. Jacks ill, so they____change their plans.
A. must
B. should
C. have got to
D. ought to
5. Harry has been reading all day he____be tired.
A. should
B. has got to
C. has to
D. must
答案：
1-5 BABCD