---- An ant has two stomachs --- one for itself and the other for others.
----Really? Quite interesting. I ________ anything about it.
A.don’t know | B.hadn’t known | C.haven’t known | D.didn’t know |
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---- An ant has two stomachs --- one for itself and the other for others.
----Really? Quite interesting. I ________ anything about it.
A.don’t know | B.hadn’t known | C.haven’t known | D.didn’t know |