—When were you born?
—I was born _______ May 10th.
A. on B. in C. at D. of
【答案】A
【解析】句意：——你什么时候出生的？——我出生在5月10日。on表示在具体某一天，故选A。
—When were you born?
—I was born _______ May 10th.
A. on B. in C. at D. of
【答案】A
【解析】句意：——你什么时候出生的？——我出生在5月10日。on表示在具体某一天，故选A。