The boys are piaying games on the piayground.的问句啊,急需谢谢（对画线部分提问）,

The boys are piaying games on the piayground.的问句啊,急需谢谢（对画线部分提问）, 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? 操场上有十几个男孩在踢足球 There are ____ ____ ten boys piaying football games on the piaygroundkkkkkkkkkkkkkkkkkkkkkk The children are piaying with their t( ) the boys had fun piaying football yesterday.the boys _____ _____ football yesterday.同义句转换 where ____his friends ___pinpong ---They____piaying in the gym A are,piaying,are B is,piaying are The (children) are piaying games over there.还是The (child) are piaying games over there. There are 11 boys piaying in a football team为什么用playing The childern are piaying on the piayground否定句 the lively children are piaying in the park的意思 he is the only one of the boys who___the piano wellA.plays B.play C.piaying D.are playing我知道the only one of 后用单数形式,但是这题选A,B和C也是单数啊,请详解 The boys are waiting____the The boys are waiting____the door? _______________________________?No,we are piaying chess in the classroom now. They are piaying basketball in the playground.改一般疑问句 The pupils are piaying football.改为否定句 The children (are piaying games).对括号内的提问 就括号部分提问 9.The children (are piaying games). What are the four boys?