Hiswifehasbeen_______alotofpressureonhimtochangehisjob.
A、takingItisestimatedthat，currently,about50，000speciesbecome_____everyyear．
A、extinctJohnsaysthathispresentjobdoesnotprovidehimwithenough______forhisorganizingability.
A、scopeMany_______willbeopenedupinthefutureforthosewithauniversityeducation．
A、probabilitiesAfterhisuncledied，theyoungman_____thebeautifulestatewithwhichhechangedfromapoormantoawealthynoble．
A、inhabited