Are they playing on the playground?（做简略的否定回答）

they on are games playing playground the ____the moment they are playing on the playground 填介词 They are playing football on the playground 改否定句 they are playing basketball ( on the field)对括号提问. They are playing happily on the playground(are playing happily） ＿＿ they＿ on the playground they are playing ball. They are playing the football还是They are playing football? they are playing the baseball 还是they are playing baseball What are the little boys doing on the floor?They are playing with t_ they are playing together是什么意思 They are (playing football) {on the playground.}分别对两个括号提问 They are (playing football) on the playground(对打括号部分提问) they are playing football on the field.改一般疑问句做否定回答 Look!Some children are playing on the s____.They look excited. Are they playing on the playground?（做简略的否定回答） They are playing football on the grass.这句话哪里有错 英语改错题they are playing the chess on the grass Parents need to keep an eye on their kids while they are playing.问：为什么用an eye on?