Question

【题目】They are going to the library ________ the afternoon ________ January 22nd.
A.at; at
B.in; of
C.on; of
D.to; at

Answer 1

【答案】C
【解析】句意：他们打算在二月二十二日上午去图书馆。of表示……的。在具体一天或者一天的上下午用介词on.结合句意，故选C。