完形填空（共20小题；每小题1分，满分20分）
阅读下面短文，掌握其大意，然后从21—40各题所给的四个选项（A、B、C、D）中，选出最佳选项，并在答题纸上将该选项标号涂黑。
Happiness is what everyone looks for.  41  someone says that he is happy. However,  42 makes him happy may not work for others. And even  43 , someone may spend all his life looking for happiness, but in vain.
In the past, I tried my best to make myself happy. I thought if I could  44  get and do what I wanted to, I would be happy. Certainly, it was  45 , but I was disappointed. Though I could be happy at  46  , I couldn’t keep my happiness for a long time. Why?
One day, when I told a friend of mine what I  47  about happiness, he smiled and said only a few words, “Happiness is not a  48  thing but a by-product ( 副产品). ”
I was surprised, but he was really   49  . 
Someone thinks money can  50  everything, but when he becomes a millionaire after his hard work, perhaps he will find that he has new  51 . And he has to go to church for  52 .  Sometimes love can bring happiness, but at other times it  53 misunderstanding, tiredness, and even quarrelling. 
Happiness is only a by-product of all  54  of things you love to do. You can not  55 it in a straight way. That is, it is not a thing  56  in the material form but in your senses.
You should tell yourself, “ I do not  57  whether I am happy or not. But I must love   58  . ” And one day you will  59  find happiness itself has quietly  60 . 

A．Maybe B．Once C．Then D．And

A．who B．what C．it D．this

A．more B．now C．worse D．so

A．often B．really C．hardly D．frequently

A．important B．necessary C．unnecessary D．possible

A．present B．all C．times D．last

A．did B．thought C．learned D．discovered

A．single B．simple C．common D．strange

A．lying B．stupid C．right D．foolish

A．get B．make C．produce D．bring

A．wishes B．demands C．worries D．business

A．help B．God C．comfort D．rest

A．suggests B．happens C．seems D．causes

A．fields B．types C．kinds D．forms

A．find B．grasp C．search D．discover

A．floating B．existing C．coming D．surrounding

A．mind B．know C．ask D．wonder

A．life B．family C．happiness D．health

A．hardly B．suddenly C．never D．often

A．disappeared B．missed C．lost D．arrived