—An ant has two stomachs—one for itself, one for others.

—Really? Quite interesting. I ________ anything about it.

A．don't know

B．have known

C．haven't known

D．didn't know

 

【答案】

D

【解析】根據(jù)語境可知第二個人在說話前不知道第一個人談及的事情，用一般過去時。

 

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