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。
Asitinvolvesonlyasmall___,wehopeyouwillhavenodifficultyonpromotion.()
Idon’tthinkthechargeforoverhaulingtheequipmentisexcessivein_______toitssize.
Totrade____thepeopleofalleountries____thebasisofequalityandmutualbenefitisourestablishedpolicy.
Weshallbegladtoreceiveyouoffer ___walnutmeat,shipment,____September/October;_____transshipmentatHongkong.
ThetheoryoflanguageunderlyingtheGrammar-TranslationMethodwasderivedfrom_____Linguistics.
