many species of animals which once lived on the earth( ) no longer in existence.

题目

many species of animals which once lived on the earth( ) no longer in existence.
A.is B.are C.was D.were

答案

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...