问题
选择题
Mary is going _____ December, and she's staying _____ three weeks. [ ]
A. on; for
B. in; for
C. at; in
D. in; on
答案
答案：B
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Mary is going _____ December, and she's staying _____ three weeks. [ ]
A. on; for
B. in; for
C. at; in
D. in; on
答案：B