Ⅰ.单句语法填空
1．What is more important in life is to have a great goal and the determination to achieve it.
2．Why he failed in the exam is still a mystery and his parents want to find out the reason.
3．It's known that knowledge is treasure and practice is the key to success.
4．Happiness doesn't depend on who you are or what you have; it only depends on what you think of your life.
5．When you are in love with a person, you will feel that you are the happiest person in the world.
6．It's expected that you will spread love wherever you go.
