The Britons of the Celtic tribes were the forefathers of the modern（）

The U.K. consists of England, （）,（）and Northern Ireland.

The capital city of Wales is（）

The climate of Britain is moderated by the （）and is much milder than that of many places in the same latitude.

The population of the U.K. is more than （）million.

The political centre of the Commonwealth is（）

The source of the River （）is in the Cotswolds.

Westminster, the area of central government administration is situated in the （）End.

The population of the U.K. consists of the English, the Welsh, the Scottish and the（）

Britain is basically an exporter of（）