A. Correct the mistakes 1. The smallest island is Great Britain, which consists of two parts: Scotland and Wales. 2. More than seventeen thousand people live in London area. 3. The surface of the British Isles doesn't vary very much. 4. There are many rivers in Great Britain, and they are very long. 5. The United Kingdom isn't a highly developed industrial country.

A. Correct the mistakes

1. The smallest island is not Great Britain. Great Britain is an island, but not the smallest. The statement is incorrect because it claims Great Britain consists of two parts: Scotland and Wales, which is also incorrect. Great Britain consists of England, Scotland, and Wales.
2. The statement is incorrect. More than eight million people live in London area, not seventeen thousand.
3. The statement is correct. The surface of the British Isles does not vary very much; it is generally low-lying with some hills and mountains.
4. The statement is incorrect. There are many rivers in Great Britain, but they are not very long.
5. The statement is incorrect. The United Kingdom is a highly developed industrial country.