语法14-36Thediscoveryoftheearliestanimalwhoseexistenceledtothedevelopmentofapesandhumansin1994nearShanghaiA.havemadeB.wasmadeC.weremadeD.havebeenmade

Question

语法14-36
The discovery of the earliest animal whose existence led to the development of apes and humans ______in 1994 near Shanghai
A.have made B.was made C.were made D.have been made

Answer 1

简化句子结构得到“discovery was made”
被动语态,主语是discovery,第三人称单数,由于是in 1994,所以用过去时