题目内容：

Once a group of 50 people was attending a seminar. Halfway  1. his talk, the speaker stopped and decided  2.(create) a group activity. He went around the hall and gave each person a balloon. Each one was asked to write his or her name on the balloon 3.(use) a marker pen. Then all the balloons   4. (collect) and put in another room.

The speaker then led the group to the room full of balloons and asked them to find the balloon that had their name  5. (write) on within five minutes.  Everyone was  6. (hurry) searching for their name, bumping into each other, pushing each other around. It was chaos. At the end of the five minutes no one could find their own balloon.

Now each person was asked to randomly collect 7.balloon and give it to the person whose name was on it. Within two minutes everyone had their own balloon. When everyone quieted down, the speaker began to talk, saying that this is exactly 8. was happening in our lives.

We may like to think of  9. (us) more important than others, but our happiness sometimes lies in the happiness of other people. Give them their happiness 10. you will get your own happiness.