1.What does the sign over there mean?
No person ______ smoke or carry a lighted cigarette, cigar or pipe in this area.
A. will B. shall C. may D. must
2.My MP4 has disappeared. Who have taken it away?
A. could B. should C. must D. might
3. you go to Miss Liu，explain for me to her why I was late that day.
A.Can B.May C.Would D.Should
4.—I can’t find my MP4 anywhere.
— it be in your handbag？
A.May B.Must C.Can D.Should
