问题
选择题
—Look at the boy running on the ground. Is it David?
—It _____be him. I saw him go to the teacher's office just now. [ ]
A. might
B. could
C. can't
D. mustn't
答案
C
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—Look at the boy running on the ground. Is it David?
—It _____be him. I saw him go to the teacher's office just now. [ ]
A. might
B. could
C. can't
D. mustn't
C