He went to Nanjing October .A. inB. onC. atD. to

问题补充：

He went to Nanjing October, .

A. in

B. on

C. at

D. to

答案：

(答案→)A. in

B. on

C. at

D. to

解析：表示在某年、某月、某年某月或季节前时，用介词in。