The 16th Asian Games started November 12th in Guangzhou.A. atB. onC. inD. by

问题补充：

The 16th Asian Games started November 12th, in Guangzhou.

A. at

B. on

C. in

D. by

答案：

A. at

(答案→)B. on

C. in

D. by

解析：考查介词用法。具体到某一天使用介词on；句意：第16届亚运会在的12月12号在广州举行。故B正确。