题目内容：

Directions: Complete the following passage by using ONE word that fits the context.

What is happiness?   1.   people have different ideas. Some people are rich; they think they are happy.  2.   people have many friends, so they feel   3.  . Still others are happy because their lives are meaningful. Happiness attracts everyone. For children, happiness often suggests eating something good or   4.   with toys.   5.   a stamp collector, stamps bring more delight than meals. And for a scientist, a discovery or an invention rather than  6.  else gives him greatest satisfaction. As everything exists only because of its opposite, happiness exists only when  7.   exists. Just as a person who does not know failure never knows success, a person, who has not experienced suffering or sadness never knows   8.   happiness means. Cheer up and be happy. Happiness is not far from you. It’s just around you. Try to grasp it and enjoy it.