1. An early definition (определение) of economics
was "an inquiry (изучение) into the nature and causes of the wealth of
nations".
2. The national economy is the system of the
management and use of resources of a country.
3. You can economize if you compare the prices
of goods before buying them.
4. J. M. Keynes was a famous economist
5. Inflation may cause a bad economic state
(положение) in a country.
6. If you've got a large family, it's more economical
to travel by car than by train.