——Must we leave the reading room before 5 o'clock?——No, you _____. You can stay here until 5:30.
A. can't
B. needn't
C. mustn't
D. shouldn't
Mr. Brown is on time for everything. How _____ it be that he was late for the opening ceremony?
A. can
B. should
C. may
D. must
——Can I wear any clothes I like to school?——No, you can't. You _____ wear a uniform.
A. might
B. must
C. will
D. would
Miss Wang's bicycle is blue. So the red one _____ be hers.
A. could
B. can't
C. must
D. might