问题
选择题
－Is that your chemistry teacher Miss. Zhang?
－It ______ be her. She has gone to Beijing for a trip. [ ]
A. must
B. can't
C. might
D. need
答案
答案：B
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－Is that your chemistry teacher Miss. Zhang?
－It ______ be her. She has gone to Beijing for a trip. [ ]
A. must
B. can't
C. might
D. need
答案：B