I'm sorry. I you to me.
A. don't know; are speaking
B. don't know ;were speaking
C. didn't know; were speaking
D. didn't know; are speaking
网友回答
A. don't know; are speaking
B. don't know ;were speaking
(答案→)C. didn't know; were speaking
D. didn't know; are speaking
解析：本题一直是考生的一个难点。一定要注意I am sorry表明后面所说的动作已经发生，要用一般过去式。