—Father, you promised!
—Well, .But it was you who didn’t keep your word first.
A. so was I
B. so did I
C. so I was
D. so I did
网友回答
A. so was I
B. so did I
C. so I was
(答案→)D. so I did
解析：考查：so +主语+助动词，表示对上句话的肯定。句意：父亲，你答应过的。是的，我的确答应了，但是是你先不遵守诺言的。故选D。