My home city, London, is always full of traffic and often, the traffic isn't moving in the city center. This makes it very difficult for our parents to drive us to school. In London, the streets are often small which means it can also be difficult for ambulances, school buses and police cars to get through.
Many people in London don't drive to work because it takes them a very long time. Most people choose to travel by train, underground or tram because they are much quicker. If people travel from outside London, they often catch a train to one of the big stations and then go by underground to their offices. It can be very expensive but with the traffic problems, it's the only and the quickest way.
Our city government has tried to improve the traffic but there are still too many cars. A few years ago, they stopped lorries going into the centre between 8 a.m and 6 p.m. This helped a little bit, but not enough. They then made every car driver pay to drive in London between 8.30 am and 6 p.m. This didn't make the traffic better because unfortunately people still paid to drive in London.
How can they change this problem? They intend to stop all vehicles going into the center except buses and taxis. Will it make travelling around London better or worse? Only time will tell. Question 1: What is the passage mainly about?

We cannot imagine how life is without mobile phones. Today, nearly all teenagers have mobile phones. (12) , in the past, most of their parents did not have a mobile phone when they were young and the idea of having one did not even enter their heads.
Twenty-five years ago, young people did not speak (13) to their friends on the phone very much. At that time, there were phones in the home, but these phones were used by the whole family. Instead, young people often met up with their friends and did a (14) wide variety of activities with them.
Today, many parents (15) happy for their teenage children to have a phone. They think that there are good (16) for them having one. For example, if their children are going out, they can call them to know where they are and what time they will be home.