--You forgot your keys when you left home in the morning.
--Good heavens,___________.
A. so did I. B. so I did. C. so you did. D. so did you.
--You forgot your keys when you left home in the morning.
--Good heavens,___________.
A. so did I. B. so I did. C. so you did. D. so did you.
B
本题是省略的用法考查。注意两人对话中的you和I是同一个人,所以用so +I+did。