问题
选择题
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
答案
答案：C
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。