11. "The sun rises in the east and sets in the west", my teacher said. 12. My friend said," I have already written this letter". 13. Carol said to me, "I will ask Mr. Wilson about this lesson the next day". 14. Her friend said to her, "I don't understand these lessons carefully". 15. Mr. Quang said,"I must leave right now". 16. Charles said to Jane, "I have to leave the office before 3.30 pm" *** 17. Mary and John said, "We don't know those two girls very well" 18. Jimmy said to Maryam, "I have given you this bike twice"