来自凌静的问题
()Duringtheafter-schoolactivities,somestudentsareplaying___ontheplaygroundwhiletherest____doingsomehomeworkintheclassrooms.A.happy,areB.haaily,areC.happily,isD.happy,is
()Duringtheafter-schoolactivities,somestudentsareplaying___ontheplaygroundwhiletherest
____doingsomehomeworkintheclassrooms.
A.happy,areB.haaily,areC.happily,isD.happy,is
