Сделать диалог, в диалоге должен быть present simple, present continuous, глагол to be, past simle, и ответы

talk – talkative

My friend isn't very talkative. (Мой друг не очень разговорчив.)

use – usefull/useless

I tried to find a way out, but it was useless. (Я пытался найти выход, но это было бесполезно.)

create – creative

My uncle is the most creative person I know. (Мой дядя — самый творческий человек, которого я знаю.)

impress – impressive

Our athletes achieved impressive results last year. (Наши спортсмены добились впечатляющих результатов в году.)

cooperate - cooperative

We need cooperative actions. (Нам нужны совместные действия.)

1. Economists are interested in the problems of factors that affect prices of goods and services and necessary recourses to produce them, as well as sellers' and buyers' behaviour in the market and the relationship between "price system" and "market mechanism"
2. Three main approaches to economics are microeconomics, macroeconomics, and development economics.
3. Specialized areas of economics are money economics, international economics, labour economics, industrial economics, agricultural economics, growth economics, mathematical economics, etc.
4. Economists use economic models to understand economic problems and make correct predictions
5. It is not possible to include all the details in a model because real life is complex and a model is an abstraction from real life. 
6. A model usually include essential elements and relationships of a particular economic situation
7. An economists choose the model that predicts the results of a particular phenomenon more accurately
8. It is necessary to collect and study actual data in order to know how accurate a model is