单选题 I was born ______ the morning of October 4th, and my birthday is coming soon.
A. for B. on C. in

【正确答案】 B
【答案解析】句意:我出生在10月4日早上,生日马上就要到了。本题考查介词的用法。具体到某一天的早上,介词应该用on,故选B。