-----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 |
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-----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 |
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