The political centre of the Commonwealth is（）

The full title of the U.K. is the United Kingdom of （）and （）

The most important river is the River of （）

Natural gas was discovered in Britain in the（）

The U.K. is situated in （）Europe.

The International festival of music and the arts is held every year in the city of（）

River （）flows through Glasgow.

Britain is basically an exporter of（）

The “Backbone of England” refers to the （）

The British national anthem is（）