Odpowiedź:
ex1
1 was built
2 hasn't been invented
3 weren't stopped
4 You
ex2
1 will be done
2 hasn't been used
3 was the photo taken
4 Are the rooms cleaned
5 weren't informed
6 has the trip been cancelled
7 won't be sent
8 aren't sold
ex3
1 You can learn
2 it painted by?
3 One needs to
ex4
1 hasn't been repaired
2 was made
3 wasn't
4 One
ex5
1 is organized
2 Was Caroline invited
3 is the system checked
4 will be paid
5 aren't used
6 have been stolen
7 won't be delivered
8 was the painting found
ex6
1 it written by?
2 One has to
3 You can visit