Помогите пожалуйста! ! ! ! ! !

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 orchid we grow potatoes and tomatoes.
5 This museum exhibits the 18th century organs, pianoso and grand pianos.
6 Why do financial crises happen?
7 I want to read Shakespeare 's plays, both tragedies and comedies.
8 Roofs 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.