I've lost a lot in my life,but they are not very important.The most important thing I've lost as far as I could remember is an alumni book.Inside are the contact ways to my friends and wishes they sent to me which are the most precious.But somehow I lost it with carelessness.I lost contact with some of my classmates.Though I managed to contact them in other ways,I learned to be much more careful with things that are important to me.I will never make this kind of mistakes again! I've lost a lot in my life,but they are not very important.The most important thing I've lost as far as I could remember is an alumni book.Inside are the contact ways to my friends and wishes they sent to me which are the most precious.But somehow I lost it with carelessness.I lost contact with some of my classmates.Though I managed to contact them in other ways,I learned to be much more careful with things that are important to me.I will never make this kind of mistakes again!