问题
选择题
—Where's Lucy?
—I'm not sure. She ________ in the school library. [ ]
A. maybe
B. must be
C. may be
D. will be
答案
答案：C
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—Where's Lucy?
—I'm not sure. She ________ in the school library. [ ]
A. maybe
B. must be
C. may be
D. will be
答案：C