高二英语短文改错,急求

高二英语短文改错,急求
这是一篇文章,每题有一个错误,只有一题是打勾的,速求解答 1.When I was a child,my family lived in a small town. 2.My uncle owned a bookshop where I visited regularly. 3.I used to sit on the floor and enjoyed reading picture books. 4.At the age of 7,I started schools.And I helped my uncle in 5.the shop at weekends and holidays.I wrapped up books. 6.When business was quietly sometimes,I read.Later, 7.I was able to tell customers the books they were buying. 8.When I became a college student,I left for my home town. 9.I could not longer help and read books in the bookshop, 10.but I have gained a love for books,which has never left me.

1.√
2.where → which/that 或 省略where
3.enjoyed → enjoy
4.schools → school
5.at → on
6.quietly → quiet
7.customers和the中间加入about
8.去掉for
9.not → no
10.去掉a

谢谢了