1.C
=>Dẫn chứng : Tokyo is different from London when you want to walk to a place. During the day, most people travel to work by train.
2.A
=>Dẫn chứng : The worst time to be in the street at night is about 11.30 when the nightclubs are closing and everybody wants to go home. ( Câu cuối của bài )
3.D
=>Dẫn chứng : They always leave and arrive on time. 
4.B
=>Dẫn chứng : On a London train, everybody in a seat seems to be asleep whether the journey is long or short.