专四语法练习题（二十九）

1. Mike, you__1__play with fire. You__1__ burn yourself.
A. won’t; can’t B. mustn’t; may
C. don’t have to; must D. have got to; shouldn’t
　　
2. You__2__see the doctor, Joe. You don’t look very well.
A. must B. shall C. may D. can
　　
3. —Must I clean the window now?
　　—No, you__3__
A. mustn’t B. needn’t C. can’t D. may not
　　
4. Jack’s ill, so they__4__change their plans.
A. must B. should C. have got to D. ought to
　　
5. Harry has been reading all day —he__5__be tired.
A. should B. has got to C. has to D. must

（做完后才能看答案哦！）