As suburbs grew, businesses moved into the new areas. Large shopping centres containing a great kind of stores changed con- (1)______ sumer patterns. The number of these centres rose from eight in (2) the end of World War II to 3,840 in 1960. With easy parking and convenient evening time, customers could avoid city shopping (3)______ entirely. New highways created a better access to the suburbs and (4)______ its shops. The Highway Act of 1956 provided $ 26,000 million, the largest public work expenditure in US history，to build (5)______ more than 64,000 kilometres of federal roads to link together all parts of the country． Television，consequently，had a powerful impact on social (6)______ and economic patterns．Developing in the 1930s，it was not widely (7)______ marketed until after the war．In 1946 the country had about (8)______ fewer than 17，000 TV sets．Three years later，consumers were buying 250，000 sets a month，and by 1960 three—quarters of all families owned at least one set．In middle of the decade，the (9)______ average family watched television four to five hours a day． Americans of all ages grew exposed to increasingly sophisticated (10)______ advertisements for products said to be necessary for the good life.