-Mary visited the Great Wall last Sunday.-So ____ I.

问题描述:

-Mary visited the Great Wall last Sunday.-So ____ I.
am
do
visited
did

--Mary visited the Great Wall last Sunday.
--So (did) I.
玛丽上周日游了长城.我也是.
So+助动词+主语这个句型表示某人也怎样.助动词要跟前一句的谓语动词一致,visited是过去式,所以要用助动词did.