—It was careless of you to have left the house without turning off the gas.
—My god! .
A. So were you
B. So was I
C. So did I
D. So I did
网友回答
A. So were you
B. So was I
C. So did I
(答案→)D. So I did
解析：本题考查“So+主语+助动词”和“So+助动词+主语”两句式的区别。表示同意别人所说的话，回答作进一步证实，加强语气用第一种句式。表另一个人或物也发生同样的事情，则用第二种句式。