1. Business people are involved in the management of companies.
2. My father builds bridges.
3. Every year they spend a couple of months at the seaside .
4. In our orchard we grow potatoes and tomatoes.)
5. This museum exhibits the 18th-century organs, pianos (or piani) and grand pianos (or grand piani).
6. Why do financial crises happen?
7. I want to read Shakespeare's plays, both tragedies and comedies.
8. Roofs (or rooves) on houses vary in geometry, method of ventilation and covering material.
9. There are computer discs in those boxes.
10. At the Geography lessons we study nature phenomena.
a) 1. Is that air and water pollution is reaching very large proportions
2. Are becoming seriously polluted by industry.
3. it is possible to eliminate air and water pollution by planned actions of human society as a whole.
4. is evident to all
5. to take measures to safeguard natural resources and the environment on a global scale.
6. are successfully being carried out on a global scale.
Объяснение: