题目内容

- 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
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。
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