they are orange sweaters 改为单数句

they are orange sweaters 改为单数句 they are orange schoolbags改为单数句 They are orange schoolbag改为单数句,怎么改啊! those are orange towels改为单数句 改为单数句:Those are orange oranges. Are these orange quilts?改为单数句 ther are orange butterflies改为单数句 those are orange jackets改为单数句 1.They are orange backpacks（改为单数句） 2.My telephone They are orange trees 怎么改为单数句 这是明早作业, Those are orange说（改为单数句） THese are orange pencil cases (改为单数句）