问题补充:
Children often get presents Christmas and their birthdays.
A. on…at
B. in…on
C. at…on
D. at….in
答案:
A. on…at
B. in…on
(答案→)C. at…on
D. at….in
解析:at Christmas, on Christmas Eve是固定搭配。Birthday前面用on,因为是特定的一天。
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