5、gB.wasexercisingC.exercisesD.exercised11.[xx·东营]There sixcountriesinSCO(上合组织)atfirst,butnowthenumberhasincreasedtoeight. A.isB.areC.wereD.willbe12.[xx·咸宁]—High-speedtrains,Mobilepayment,SharingbikesandOnlineshoppingarecalled“fournewgreatinventions”ofmodernChina.—They o