1. The salad was cooked of fruit and was very tasty.
2. The rice soup is made of rice and carrots.
3. A round-trip ticket was bought two days ago.
4. When will the test be checked?
5. How many roses were planted?
6. The problem of pollution is discussed in many countries.
7. The kinds of crops are determined by the climate.
8. Natural resources are managed by special organizations.
9. Extensive agriculture is practiced where land is plentiful.
10. Was the doctor sent for or not?
11. The luggage was brought by the porter.
12. The tourists will be shown around London by the guide.
