Ответ:

1. was destroyed

2. was surprised

3. is ... being met

4. was handed

5. have been talked

6. was given

7 has been destroyed

8 was prevented

9 are needed

10 are being worn

11 has been developed

12 will be released

13 was metioned

14 will be demonstrated

15 was being looked

16 was operated on

17 was approved of

18 has been bought

19 was being used

20 will be expected