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1. All flights have been cancelled because of the bad weather. 
2. You can't move into the house now because it is still being decorated. 
3. How are languages learned? 
4. Sean was accused of selling secret information to our opponents. 
5. The music was very loud. It could be heard a mile way. 
6. A mystery is something that can't be explained. 
7. Have you been shown the house plans? 
8. Please go away , I want to be left alone. 
9. You are going to be asked some difficult questions at the interview. 
10. How much money was stolen from the bank? 
11. In the United States, the President is elected every four years. 
12. You were invited to the party. Why didn't you go? 
13. Who are the children being taken care of?
14. The car was four years old , but it hadn't been used by its owner very much. 
15. " Can I help you ?" No ,thanks. I am being helped.