Define whether the following sentences are TRUE (T) or FALSE (F). Correct mistakes.

1. John's friends had a farewell party for him last Friday. 2. He tried hard to get good grade on the test. 3. It is always difficult to make the decisions. 4. When he lived in Paris he went to parties every weekend. 5. They gave me a electric typewriter for my birthday. 6. Paul began to think that he would never find the happiness. 7. The old man no longer believed that money was the most important thing in life. 8. He wanted to try on pair of jogging shoes at the store. 9. In all his life he had never wanted to try the wine. 10. She does not have an understanding of the subject yet. 11. I just saw boys from Africa that I met at the International House party last week. 12. Teachers usually spend many hours correcting papers. 13. Some people believe that frankness is the best policy in any situation. 14. The man who fixed my air-conditioning unit accidentally broke the fan. 15. The doctors have to go to school for many years to complete their education. ​