Thanks to the ________ of air transport, everyone is free to go anywhere at any time.

An air conditioning manufacturer that offers free ceiling insulation to consumers who purchase an air conditioner during a winter sale could best be described as implementing a/n __________ strategy.

A. F. B. means Air ( ) Bill. A: Free B: Freight C: Foreign D: Full

Thanks to the __________of air transport, everyone is free to goanywhere at any time. A: embarrassment B: stuff C: efficiency D: emotion

Thanks to the _______ of air transport, everyone is free to to anywhere at any time. A: sufficiency B: deficiency C: proficiency D: efficiency

Thanks to the _____ of air transport, everyone is free to go anywhere at any time. A: effect B: efficient C: effective D: efficiency

Thanks to the ______ of air transport, everyone is free to go anywhere at any time.( ) A: efficiency B: effective C: affection D: reflection

Thanks to the __________ of air transport, everyone is free to go anywhere at any time. A: emotion B: embarrassment C: e-commerce D: efficiency

Thanks to the ( ) of air transport, everyone is free to go anywhere at any time. A: donation B: embarrassment C: efficiency D: stuff

Thanks to the ______of air transport,everyone is free to go anywhere at any time.() A: efficiency B: clutter C: blade D: tube