Whatisthemainadvantageofradioads:（）
Nancy:MayIseeyourdrivinglicenseandvehicleregistrationcard,please?
Dick:______.
Asthenumberofparticipantshasincreasedfrom60to98,wewonderifwecanuseLectureHall'A'as'B'willbetoosmall.
Managersknowthatstressisabarriertomotivatingtheworkforce.
Facedwithrapidinflationand_____internationalandhomemarkets,manyfirmshavedeclaredbankrupt.
