阅读下面两篇短文，根据短文内容，从A、B、C三个选项中选比

可以填入空白处的正确答案。

    There is an old saying, "Laughing is the best medicine." Now people are using laughter to 1their health all around the world. It's 2for hospitals to treat illness(治病) with laughter. In 2010, a study in Russia showed that laughing helped 3get better and faster. It made them relax, and this improved their health.

    Laughing helps us feel 4. And it gives the body exercise too. Doctors say five minutes of laughing is good for you as fifteen minutes   5.