Ответ:
- The first television programmes were shown at the beginning of the 20th century.
- Nowadays new television technologies are being developed.
- He says the new book is being discussed in Room 15 now.
- Look! A new school is being built in our street.
- A lot of programmes on TV are devoted to sport.
- This fact is known to everybody.
- Don’t worry! Your papers are being prepared. They’ll be ready soon.
- These exercises were done yesterday.
- When Nick entered the kitchen, dinner was being cooked.
- These books are sold everywhere now.
Ответ: 1) were shown; 2) are being developed; 3) is being discussed; 4) is being built; 5) are devoted; 6) is known; 7) are being prepared; 8) were done; 9) was being cooked; 10) are sold.
