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3.What did you have / had you for breakfast?
4.Why did Apple make / Apple made you? 5.What do you want / want you for your birthday?
6.What came / did come first, the chicken or the egg?
7.What means 'Siri' / does 'Siri' mean?

1. the computer is being  used at the moment. 2. your house looks different. have you painted it? 3. water covers most of the earth's surface. 4. most of the earth's surface is  covered by water. 5. when we got to the stadium, we found out that the game had been  cancelled. so we couldn't see the match. 6. the park gates are  locked at 6.30 p.m. every evening. 7. the letter was  posted a week ago but it arrived yesterday. 8. ann couldn't use her office yesterday. it was being  redecorated the whole day. 9. at 10 o'clock tomorrow, ann will be in her office. she will be  working then. 10. ron's parents died when he was very young. he and his sister were  brought up by their grandparents. 11. while i was on holiday, my camera was  stolen from my hotel room. 12. look! a new hospital is being  built near the airport. 13. where have  these photographs been  taken? in london? have you taken them? 14. two people were  arrested last night. 15. the computer broke down yesterday, but now it's ok. it is  working again. it has been  repaired. 16. the man next door disappeared six month ago. nobody has seen him since then. 17. the room looked nice. it was  cleaned. 18. there's somebody walking behind us. i think we are being  followed. 19. a mystery is something that can't be  explained. 20. i'm sure that by the time we come to the theatre, all the tickets will have  already been sold.