`a.`
2. The quiz master
- In Britain, the quiz master is Chris Tarrant
3. The contestants
- He asks the contestants fifteen questions `->` The people are asked by Chris Tarrant are contestants
4. The studio audience
- You can ask the studio audience which answer is right
`b. `
1. Chris Tarrant
- In Britain, the quiz master is Chris Tarrant
2. Fifteen questions
- He asks the contestants fifteen questions
3. £500,000
- If you can answer the fourteenth question, you can win £500,000
4. 3 ways
- If you don’t know the answer to a question, there are three ways you can get help
5. In more than 100 countries
- Can be seen in more than 100 countries and is now the world’s most popular quiz programme