Friendship is one of the greatest pleasure

问题：

Friendship is one of the greatest pleasures that people can enjoy. It is very difficult to find a better definition of friendship. A true friend does indeed find pleasure in our joy and share pity in our sadness. He or she is always at our side to give us his or her help.
Knowing how important friendship is, we should be very careful in our choice of a friend. We must choose someone who has a good character, who does everything good and who shows kindness of heart. We should avoid those people who are easily changed.

What is the most important thing of a friend
[A] He or she is good-looking.
[B] He or she has no other friends.
[C] He or she understands you.

A true friend can always be believed, loved and respected. If you tell a friend your secrets, he or she won’t tell anyone else. Friends share each other’s joys and sadness. They help each other when they are in trouble, and cheer each other up when they are sad. The most important thing is that a friend always understands you. So, when you have made a good friend, don’t forget him or her.