Найдите ошибки 1. my bag is as clean as her one. 2.this book is interesting as that one. 3.his brother is older than hers brother. 4. yours mistakes are as bad as mine ones.

1. My bag is as clean as hers.
2.This book is as interesting as that one.
3.His brother is older than her brother. или His brother is older than hers.
4. Your mistakes are as bad as mine.