句子改错。请从 A、B、C中选出错误选项，并将正确答案填写在横线上。

①Lucy's hair is as long as her twin sister. 

②Stones are everywhere. It's hard for sheeps to find grass to eat. 

③There are such many people exercising in the new square every day. 

④Now Lily with her parents are thinking about how to choose a proper college wisely. 

⑤The young singer has written a number of songs in 2010. His songs are becoming more and more popular.