Вставьте наречия времени: just, already, never, yet, recently, lately.
1. The role of the service sector has increased...
2. Most manufacturing industries have...used intensive technologies for processing resources...
3. Economists have not given a full definition of economics ...
4. Economists have ... developed three main approaches to economics.
5. -Have you got enough actual data to make a model ...?
-Yes, I have ... finished it.
6.Economists have ...included services that are provided by doctors and teachers in the primary sector.
7. Economics has... used models successfully to analyze some difficult economic problems.
8. -Has the economist made a proper decision..?
-No, he has not made it...
9. Microeconomics has... studied the problems of the whole countrys economy.