10. Johnny said to his father, "I don't know how to do this exercise." ->... 11. Nam said "I am told to be at school before 7 o'clock". 12. Thu said "All the students will have a meeting next week". 13. Phong said to me "My parents are very proud of my good marks". 14. The teacher told "All the homework must be done carefully". -->.... 15. Lan's father said to her "You can go to the movie with your friend". 16. The teacher told "We can collect old book for the poor students".