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.{#blank#}1{#/blank#}
②Stones are everywhere. It's hard for sheeps to find grass to eat.{#blank#}2{#/blank#}
③There are such many people exercising in the new square every day.{#blank#}3{#/blank#}
④Now Lily with her parents are thinking about how to choose a proper college wisely.{#blank#}4{#/blank#}
⑤The young singer has written a number of songs in 2010. His songs are becoming more and more popular. {#blank#}5{#/blank#}
