Weregretto________thatitmaynotbepossibletodealwitheveryrequest.
TheinteractionsbetweenChinaandtheUSwillsurelyhaveasignificant_______on.peaceandstabilityintheAsia.—Pacificregionandtheworldasawhole.
Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.
过渡时期总路线的“一体”包括_______。
Abeamoflightwillnotbendroundcornersunless________(make)todosowiththehelpofareflectingdevice
