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。
WeenclosedourPurchaseConfirmationNo.4848__in__duplicate^)一式两份intriplicate(一式三份)
Idon’tthinkthechargeforoverhaulingtheequipmentisexcessivein_______toitssize.
WhichofthefollowingtechniquesisNOTusedintheGrammar-TranslationMethod?________
TheultimategoaloflearningaforeignlanguageinaGrammar-Translationclassroomistoenablethestudentsto______itsliterature.
TheywillgetthepreparationdoneearlyinMay.
