Read the following text and decide which answer best fits each blank. 

It is only in America that cities are no longer regarded as the richest of man’s built environments. Urban decay is as old as (1) _____ but urban blight is something else again: it occurs when (2) _____ city economies are undermined by the flight of the middle class to the suburbs. This process has gutted many American cities in the period (3) ____ World War II. The suburbanites still depend on the city for their livelihood but no longer (4) _____ much to its sustenance. The creation of metropolitan governmental authorities encompassing a city and its suburbs would do much to balance the (5) _____ inequities which have arisen and help to assure the financial health of cities.

It is only in America that cities are no longer regarded as the richest of man’s built environments. Urban decay is as old as (1) _____ but urban blight is something else again...