So, what did you john when you saw him? что писать вместо многоточия sayили tell.

Tell
можно было бы поставить say, если перед John стояло to

Tell-сказал
так, что ты сказал Джон, когда ты видел его?

1. — Why have you arrived so late? — I  forgot to set my alarm clock last night.
2. — There aren't any grapes. Who has eaten them all? — I don't know.
 I haven't eaten them. I don't like grapes. 3. — I have got  a beautiful gift in the mail last week. — Who sent  it? — Uncle Jim. 4. — What does his answering machine say? — It says, "I'm sorry I have missed your call. Please, leave your name and a short message. Thank you. Have a nice day".
5. A: Let's study together. B: Gee, I'm not in the mood to study. I was studying  all day yesterday.  
B: What did you do yesterday?    A: I played tennis.
6. — Where are the kids? — Joan is playing outside, and Bob is doing homework.
— What about Joan's homework? — She did  it last night.
7. — Where are the cookies? — I hid them last night. — Why did you hide them?
 — I am trying to lose weight. — Well, I'm not. I want those cookies.

C) 18. When he was painting the wall, he used scaffolding. 19. When I was sitting in the office, I suddenly saw my old friend. 20. When Nick was drafting a plan, his computer crashed. 9. I was signing the contract when my boss opened the door. D) 1. When they entered the hall, the conference had already begun. 2. The teacher understood that Helen hadn't done her homework. 3. He thought that he had lost the money. 4. Leo said that he had got (или gotten если американский английский) his education in Cape Town. 5. By the time we came to see him, he had returned home. 6. When his co-worker had left, he hurried to the station to book a ticket. e) Past Simple, Past Continuous. и Past Perfect. 1. When he entered the room, his colleagues were discussing the plan which he had made up in the morning. 2. I was sitting in an armchair and thinking of my coming business trip when the door had suddenly opened and an old friend of mine entered the room. 3. He asked me if I could give him your e-mail address. 4. She said that he had given her the wrong address. 5. When I rang up Mike, he was still learning the rule which he had begun learning at school. 6. I asked him where he had put my letter.