16. “I'll phone you tomorrow," he told Jack.

-He told Jack that he would phone him the following day.

17. "Can I sit beside you, Jean?" Tom asked.

-Tom asked Jean if he could sit beside him

18. "I want a camera for my birthday," he said.

-He said that he wanted a camera for his birthday.

19. "Don't keep the door locked," he said to us.

-He told us not to keep the door locked.

20. "How long are you going to stay?" I asked him.

-I asked him how long you was going to stay.

21. “Are you going by train?" she asked me.

-She wanted to know whether I was going by train.

22. "Don't use too much hot water," she said to us.

-She asked us not to use too much hot water.

23. "Will you come to my party?" she said to me.

-She invited me to come to her party.

24. "Don't do it again," she said to them.

-She told them not to do it again. 

25. "Did Mr Brown send the potatoes to you?" she asked.

-Shę asked whether Mr Brown sent the potatoes to you.

=>
16. He told Jack tht he would phone Jack the following day.
17. Tom asked Jean if he could sit beside her.
18. He said that he wanted a camera for his birthday.
19. He told us not to keep the door locked.
20. I asked him how long he was going to stay.
21. She wanted to know if I was going by train.
22. She asked us not to use too much hot water.
23. She invited me to come to her party.
24. She told them not to do it again.

25. She asked if Mr.Brown had sent the potatoes to me.