Choose the correct answers

Exercise 1: Choose the correct answers.
1. The British Prime Minister live in Downing Street/ the Downing Street.
2. Frank is a student at Liverpool University/ the Liverpool University.
3. Mr. Jenkins reads Daily Telegraph/ the Daily Telegraph but his wife reads Times/ the Times.
4. In Britain coffee/ the coffee is more expensive than tea/ the tea.
5. After leaving school/ the school, Nora worked as a cleaner in hospital/ at the hospital.
6. All over the world, people are in prison/ the prison because of their political beliefs.
7. The other day the fire-brigade had to go to prison/ the prison to put out a fire.
Làm và giải thích giúp mình.