Itisestimatedthat，currently,about50，000speciesbecome_____everyyear．
Allherhardwork__________intheend，andshefinallypassedtheexam．
TheopportunitytoexploreandplayandtheencouragementtodosoCan________theperformanceofmanychildren．
Idon’tthinkyou'llchangehismind；oncehe’sdecidedonsosomethinghetendsto_____it.
Many_______willbeopenedupinthefutureforthosewithauniversityeducation．
TheinteractionsbetweenChinaandtheUSwillsurelyhaveasignificant_______on.peaceandstabilityintheAsia.—Pacificregionandtheworldasawhole.