11.Johnny told his mother that he didn't know how to do that exercises.

12.The pupils told their teacher to give them better marks.

13.He asked who put salt in his coffee.

14.My friend asked if I was going to leave the following day.

15.My mother asked if I had done my homework.

16.I asked Bill what time he had gone to bed the night before.

17.His mother asked him whose bicycle he had borrowed the day before.

18.He asked me why I hadn't come to class the day before.

19.Tom asked Mary if she phoned him the day before.

20.The traveller asked how long it took to get to London.

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11. Johnny said to his mother that he didn't know how to do that exercise.
12. The pupils told their teacher to give them better marks.
13. He asked who had put salt in his coffee.
14. My friend asked me if I was going to leave the following day.
15. My mother asked me if I had done my homework.
16. I asked Bill what time he had gone to bed te night before.
17. His mother asked him whose bicycle he had borrowed the day before.
18. He asked me why I hadn't come to class the day before.
19. Tom asked Mary if she had phoned him the day before.
20. The traveller asked how long it took to get to London.