- When was David born?- He was born June 12 1989..A. atB. inC. onD. for

问题补充：

- When was David born?

- He was born June 12,1989..

A. at

B. in

C. on

D. for

答案：

A. at

B. in

(答案→)C. on

D. for

解析：根据题干分析，具体到某一天要用介词on，故选C。