问题补充：
Im sorry. I you to me.
A. don know; are speaking
B. don know ;were speaking
C. didn know; were speaking
D. didn know; are speaking
答案：
A. don know; are speaking
B. don know ;were speaking
(答案→)C. didn know; were speaking
D. didn 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。
