Liu Ying was very sad. Let’s sing songs to ________.

For fear of unemployment, almost one million people sat （参加考试）China civil service examination in order to get ________jobs.

Mr. Hu, can you tell us how to learn swimming well—Sure. But remember we can learn nothing well _______ hard work.

Many students like Miss Wang.—That’s ________her classes are lively and interesting.

The more you smile, the ___________ you will feel.