题目内容
The teacher's office is dark now. Our English teacher ________ be in his office.
[ ]
A．mustn't
B．must
C．can
D．can't
答案：D
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53随堂测系列答案题目内容
The teacher's office is dark now. Our English teacher ________ be in his office.
[ ]
53随堂测系列答案