问题
选择题
Children get gifts ____ Christmas and ____ their birthdays.[ ]
A. on; on
B. at; on
C. in; in
D. in; on
答案
答案：B
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Children get gifts ____ Christmas and ____ their birthdays.[ ]
A. on; on
B. at; on
C. in; in
D. in; on
答案：B