I was born March 1999.A. onB. inC. atD. for

问题补充：

I was born March,1999.

A. on

B. in

C. at

D. for

答案：

A. on

(答案→)B. in

C. at

D. for

解析：句意：我出生于1999年3月。在年，月的前面用介词in.故选B