题目内容：

my farther asked me_____.A.when did it happen B.where it happens C.how it happened
D.how did it happen

优质解答

C.
主句动词是asked,限定了从句的时态都属于过去范畴（特殊情况除外）,故B不可能.
A B 明显不可能,因为从句的语序颠倒了,从句的语序属于正常语序.