一道题目为：There are many children in the playground.The number o

there are many children in the playground the num there are many students in the playground there are many children playing football on the playground,对 There are many s____ playing football in the playground There are many students in the playground.(同义句转换) 改病句How many student are there in the playground? There's a ( )(children) in the playground. There are many students on the playground.Some are playing,o There are many children in the park.改为单数形式 把there are some children in the playground改为否定句和一般疑问句 children,practising,the,in,are,playground,the 怎么连起来 有这么一道题很不懂!There are many students ____ on the playground.应该填