根据短文内容及首字母提示完成短文。（每空一词）
Friends play an important part in our lives. We may have many friends, but we often don’t understand c 71 how we make friends. We may get on well with a n 72 of people, but we usually make friends with a very few of them.
People use the word "friend" freely. Friends may k 73 each other since childhood or they may recently meet. In fact, people many have different k 74 of friends such as school friends, work friends, or sports friends. A person may c 75 different friends for different activities. If you play with s 76 on the playground, the person is your playmate. If you often play chess w 77 a friend, the person is your chess partner.
One may have many good friends and only one best friend. " Best friends" or "close friends" are u 78 two people who have known each other for a long time. A close friend is someone who is able to s 79 experience, joys and sorrows(悲伤) with you. This is a person you can rely on (信赖) when you are in n 80 , and this is the person to whom you are willing to lend a helping hand.
Friendship is one of life’s greatest treasure.
