题目内容：

阅读下面图文，简要回答所给问题。

Are you happy? Perhaps some of you will say “no”. In fact, being a teenager is hard. You may worry about a lot of things in your life.

Do you know what British teenagers worry about most? You can find the answer from the chart below. The research was done by the UK's Department of Health among more than 100，000 teenagers. Here are the results.

Many Chinese teenagers share similar worries with the British teenagers. A recent research shows that many Chinese teenagers suffer from social life, study and emotional problems.

To solve the problems, some schools came up with the idea of happiness education. For example, Tsinghua University High School tried to meet students' needs. It built a skating rink and different laboratories to develop their interest.

While schools take action, students themselves can do something, too. The professor Nadia Lovett from Australia believes students' habits, hobbies and attitude toward life all play a role in their happiness.

1.Which is the biggest worry of British teenagers?

_____________________________________ 。

2.What percent of British teenagers worry about smoking?

_____________________________________ 。

3.How did Tsinghua University High School meet students' needs?

_____________________________________ 。

4.According to Nadia Lovett, what influences students' happiness?

_____________________________________ 。

5.What do you often worry about in your life?

_____________________________________ 。