Ответ:

1 a cab - a taxi

2 a cabbie - a taxi driver

3 would be - to become less

4 congestion - when the road is so busy that the cars are not moving or are moving very slowly

5 to ease off - an adjective used for people who want to have or who are training for a particular job

6 The Congestion Charge - a scheme which is used in London and other cities.Drivers have to pay to drive their cars in central London during the day.

7 a traffic jam - when there are so many cars that it causes the traffic to move slowly. Congestion causes traffic jams