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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 | 
