The students are playing happily on the playground.将这句话改写成反问句
问题描述：
The students are playing happily on the playground.
将这句话改写成反问句
答
Why not are these students playing happyly on playinground?
答
Aren't the students playing happliy on the playground?
或者The students are playing happliy on the playground,aren't they?