问题:
I"m sorry. I _______ go now. My classmate is waiting for me at the gate of the school.
[ ]
A. can
B. may
C. have to
D. think
I"m sorry. I _______ go now. My classmate is waiting for me at the gate of the school.
B. may
C. have to
D. think
[ ]
A. can B. may
C. have to
D. think
参考答案: