Đáp án`+`Giải thích các bước giải:

`56. bbC`

`to` Thông tin: London, which is located on the River Thames and near the Atlantic coast, is one of the busiest centers of commerce and finance in the world.

`57.bbA`

`to` Thông tin: London, the capital of Great Britain, is one of the largest cities in the world. London, which is located on the River Thames and near the Atlantic coast, is one of the busiest centers of commerce and finance in the world

`58. bbC`

`to` Thông tin: It is also a very old city, dating back nearly 2,000 years to days of the Roman Empire. 

`59. bbC`

`to` Thông tin: People of many nationalities and occupations can be found in this historic city.

`60. bbD`

`to` Thông tin: Many visitors also go to Parliament to watch the Bristish lawmakers at work in the House of Commons and the House of Lords.