1. The Sun rises in the east and sets in the west.
2. My grandma used to tell me the folktales.
3. She doesn't like playing soccer.
4. Where are you going to go to visit next summer?- I am going to visit Hue.
5. They have worked in this company for ten years.
6. My mother has to clean the floor everyday.
7. He hasn't written to his friend since Monday.
8. Students must go to school on time.
9. I got a letter from my old friend yesterday.
10. Where he had he used to live before he moved here?