I liked to play football when I

I liked to play football when I was young.__
A、So he was
B、So was he
C、So did he
D、So he did
【正确答案】：C
【题目解析】：表示与前面所说一致的情况下，如果是so开始，则主谓倒装，但要注意其动词应跟主句的动词一致。