many species of animals which once lived on the earth( ) no longer in existence.
many species of animals which once lived on the earth( ) no longer in existence.
A.is B.are C.was D.were
A.is B.are C.was D.were
英语人气：310 ℃时间：2020-04-10 00:54:11
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many species of animals which once lived on the earth are no longer in existence species,单数和复数形式相同 例句：1 Most species provide good forage.（主语书复数 用are）2 This species provides good fo...
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