—Mr. Wang __________ be in the office. The light is still on.—No, he __________ be. Because he phoned me from the farm just now.
#77260
A
may; mustn’t
B
mustn’t; mustn’t
C
can’t; can’t
D
must; can’t
推荐题目
 -- Must I return the book by the end of next month?--    . You can keep it as long as you like.
#62836
A
No, you mustn’t
B
No, you can’t
C
Yes, you have to
D
No, you needn’t
—Must we clean the classroom now?—No ,you _______.
#76832
A
must
B
needn’t
C
aren’t
D
mustn’t