Ответ:

1) Sick people are not treated by doctors. 2) The room is not being painted now. 3) This gallery was not built twenty-seven years ago. 4) The seminar was not being held at 3 o'clock yesterday. 5) The news will not be broadcasted in an hour. 6) His latest book can not be found at all bookshops. 7) He has just not been introduced to our boss. 8) The posters had  not been hung by 4 o'clock yesterday. 9) The tests will not have been checked by tomorrow morning. 10) The dishes must not be washed.​

1) are Sick people treated by doctors? 2) is The room  being painted now? 3) was This gallery built twenty-seven years ago? 4) was The seminar being held at 3o'clock yesterday? 5) will The news be broadcast in an hour? 6) can His latest book be found at all bookshops? 7)has  He just been introduced to our boss? 8)had  The posters been hung by 4 o'clock yesterday? 9) will The tests have been checked by tomorrow morning? 10) must The dishes be washed?

Объяснение: