They________extensiveandpossiblydangerousactualflighttraining.
A、undertakeB
句意：他们经历了大量的并且可能是危险的实际飞行训练。
Weshallcertainlycontactyou,assoonasweare____apositiontoentertainnewbusinessinyourdistrict.
Sincethepremiumvarieswiththescopeof____extrapremiumisforbuyer'saccount,shouldadditionalsiskecovered?()
Thisisthefirsttimethatawomanhasbeen________tothepost.
翻译：Aswesaidpreviously,itisonlyinviewofourlongfriendlyrelationsthatweextendyouthisaccommodation
Weshallbegladtoreceiveyouoffer ___walnutmeat,shipment,____September/October;_____transshipmentatHongkong.
