问题
选择题
—Look! It must be Jack on the playground.
—It______ be him. Because I saw him enter the school library just now. [ ]
A. mustn't
B. can't
C. shouldn't
D. may
答案
答案：B
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—Look! It must be Jack on the playground.
—It______ be him. Because I saw him enter the school library just now. [ ]
A. mustn't
B. can't
C. shouldn't
D. may
答案：B