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----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 knowB.didn’t knowC.won’t knowD.haven’t known
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。
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