Question

Use the correct form of the verb in brackets in the active or passive voice.1 Scientists (to consider) different effects of genetic modification on nature? 2. Machines, fertilizers and feeds (to purchase) by farmers from large commercial companies, and a large variety of agricultural products (to sell) in the food market. 3. The interest to proper animal feeding (not/to fall) in recent years. 4. Modem genetics (to provide) both new theoretical approaches and practical methods for animal husbandry?5. Many discoveries (to make) in the field of genetics last year? 6. How many new workers (to involve) in harvesting crops every year? 7. In Russia the agricultural sector (not/to supply) the population with all the necessary products, so most of them (to import) from other countries.8. These new feeding supplements (to ensure) a complete ration for cows, thus neither silage nor concentrates (to require) to feed animals next year. 9. Highly productive breeds of cattle (to raise) in northern regions a century ago? 10. In order to satisfy the needs of people in the most essential nutrients, scientists still (to improve) breeds of farm animals.