1. I have seen this film before
2. I have never heard about it
3. Have you done the task?
4.i have just read your letter
5.i haven't watched any new films lately
6.have you ever been to London?
7.has your son graduated from the university?
Does sophia go in for sports? What sport does she go in for?
Has she ever taken part in a ski race?
does she do skiing regularly?
does she trains with coach?
could she call herself a professional athlete?
<span>Has Patrick ever played chess?
with what result has he played?
when was it?</span>
<span>does he like to play any other games
what are they?
</span>how many cities has he <span>visited with his football team?</span>
<span>Has he got any friends among his team-mates
who are they</span>
Has his team ever lost any matches
when was it?
1) -
2) He has tried.
3) I have bought.
4) I haven't brought
5) It has been snowing.
6) How long have they been cleaning the house?
7) I have known.
8) Здесь, возможно, Are you crying?
Potatoes are bought by me often. 2. Milk is sold in the shop week by the students. 4. A new concert-hall is built in every town. 5.A mumber of important experiments in this laboratory are made by them 6.The trees are planted every spring. 7. A lot of money were stolen y them from the shop. 8.1 is taught English by M Wilson. 9. All my money are spent usually by me on books. 10. The babies are taken with great care by the young mothers .
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 <span>the relationship between "price system" and "market mechanism"
</span>2. Three main approaches to economics are <span>microeconomics, macroeconomics, and development economics.
3. Specialized areas of economics are </span><span>money economics, international economics, labour economics, industrial economics, agricultural economics, growth economics, mathematical economics, etc.
4. Economists use economic models </span><span>to understand economic problems and make correct predictions
5. </span><span>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</span>