Fill in blanks with suitable words. The United States of

Fill in blanks with suitable words.
The United States of America 1) in the central part of North America. Its western coast 2) by the Pacific Ocean and its eastern coast by the Atlantic Ocean. The total 3) of the USA is over nine million square kilometers. The 4) of the USA is about 250 million people; most of them live in towns and cities. The USA is a very large 5) . The 6) of the USA is Washington. The largest 7) of this country are: New York, Los Angeles, Chicago, Detroit and others.