英语专四语法词汇练习题
摘要:1. Mike, you__1__play with fire. You__1__ burn yourself. A. wont; cant B. mustnt; may C. dont have to; must D. have got to; shouldnt 2. You__2__see the doctor, Joe. You dont look very well. A. must B. shall C. may D. can 3. Must I clean the