Itisestimatedthat，currently,about50，000speciesbecome_____everyyear．
A、extinctAllherhardwork__________intheend，andshefinallypassedtheexam．
Thepoorcountriesareextremely_______tointernationaleconomicfluctuations
Applicantsshouldnotethatallpositionsare——toAustraliancitizenshiprequirements．
Johnsaysthathispresentjobdoesnotprovidehimwithenough______forhisorganizingability.
TheinteractionsbetweenChinaandtheUSwillsurelyhaveasignificant_______on.peaceandstabilityintheAsia.—Pacificregionandtheworldasawhole.
