пожалуйста помогите верно составить предложения 1. Resources and labour

пожалуйста помогите верно составить предложения 1. Resources and labour a . is essential for economic
are necessary growth of a country.
2. It is necessary to know b. the results of every
marketing phenomenon.
3. It is not enough to study c. to produce goods.
economic theory
4. Like other sciences, d. to sell goods and
economics uses models services well.
5. To buy goods and services e. to have enough money.
it is necessary for a consumer 6. It is not always possible f to be a good economist.
to predict
7. To have enough money for his 7. family he works a lot.
8. Development of trade 8. to analyze real life situations.