来自腾永林的问题
【DuringtheSpringFestival，papercuttings________onwindows，doorsandwallsassymbolsofwishesforgoodluckandahappynewyear．（）A.areputB.wereputC.putsD.putting】
During the Spring Festival，paper cuttings________on windows，doors and walls as symbols of wishes for good luck and a happy new year．（）
A.are put
B.were put
C.puts
D.putting
