5. In countries where Christmas is celebrated, gifts can't be opened________ of December 60c9651d2b759.jpg. Most children just can't wait to get out of bed early that day.
(A) at
(B) in
(C)on
(D) until

答案：登入後查看
統計： A(6), B(5), C(12), D(44), E(0) #2721462