9. Сделайте следующие предложения отрицательными и вопросительными.
1. He opened the window before classes. 2. Ann translated a lot of foreign letters last mouth. 3. I finished work at five the day before yesterday. 4. He lived in Samara four years ago. 5. They came back home in the evening. 6. We sent a letter to our English friend. 7. I told them many details.

10. Поставьте следующие предложения в Past Indefinite Ten¬se Form. Добавьте обстоятельства времени.
1. My working day lasts eight hours. 2. Do you often get letters from your friends? 3. Does he do well at school? 4. We usually speak English in class. 5. We discuss a lot of questions. 6. I read many German magazines. 7. He always gives me some inte¬resting books to read.