1. Labour efficiency is being raised by means of new machinery (by them)2. Labour efficiency has been raised by means of new machinery (by them)3. Economic conditions are being changed in the region by the government policy4. The distribution of labour force in the country is being studied by the economists5. New equipment has been bought by them6. Prices of goods are influenced by demand and supply7. A variety of electronic equipment is produced by Japan8. A new technology is being developped to use less oil9. Natural conditions of the region are being analyzed by them10. Prices of its goods have been increased by the company11. New better products are being introduced under conditions of competition by companies