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.
2/ This mistake can easily be corrected.
3/ You may easily be fooled by them, so be careful.
4/ A foreign language can not be learnt in a few weeks.
5/ It has to be done right now.
6/ These pictures can be seen in the Russian Museum.
7/ They should be warned about the danger.
8/ This hit can be heard everywhere.
9/ Dangerous chemicals must be kept in a safe place.
10/ The doors shouldn't be left unlocked.