The boys playing football are in Cla2.我怎么觉得piaying前应该加who呢? 难道是可以省略?

Playing With The Boys 歌词 let's ()the boys playing soccer.填空 The boys are playing basketball there. 填空 the boys and girls .playing.填空 the boys and girls .playing. the are look playing boys football .)(连the are look playing boys football .)(连词成句) many boys are playing in the playground 同义句----- ----- boys are playing in the playground The boys are playing basketball instead of___volleyballA.playing B.play C.playing the D.to play The boys are playing()the dog()the big tree. Look!The boys[ ]football together.A.playing B.are playing C.is playing选择 The boys were playing the football 修改错误项 The boys are playing football in the park.改疑问句 the boys are playing volleyball() in the sports center the boys are playing the volleyball.哪里错了?The boys are playing the volleyball.哪里错了? The boys enjoy playing football.(对playingfootball提问） the boys like playing football改为一般疑问句 the boys are playing soccer.（对划线部分提问） the boys are playing football.(用What提问) 为什么是the boys is playing football over there?