问题
选择题
----I’m sorry, but making a telephone call is not allowed in the meeting-room.
----Oh, I_____that, Sorry, I don’t do that again.
A.don’t know
B.didn’t know
C.won’t know
D.haven’t known
答案
答案:B
根据语境, “我不知道”, 应该指说话前的动作, 而现在已知道了。所以本题用一般过去时。