Itisestimatedthat，currently,about50，000speciesbecome_____everyyear．
Thepoorcountriesareextremely_______tointernationaleconomicfluctuations
Themanageriscallingona______customertryingtotalkhimintosigningthecontract．
Allherhardwork__________intheend，andshefinallypassedtheexam．
TheinteractionsbetweenChinaandtheUSwillsurelyhaveasignificant_______on.peaceandstabilityintheAsia.—Pacificregionandtheworldasawhole.
Applicantsshouldnotethatallpositionsare——toAustraliancitizenshiprequirements．