Ответ:

1. This room has not been used for ages

2. The keys will be given you tomorrow

3. Dr. Johnson is interviewed at this moment

4. All your letters had been already openedby the time i arrived

5. The problems of the family is usually talked briefly about at dinner time

1 1

2 1

3 2

4 1

5 2

6 2

7 1

8 3

9 2

10 1

Объяснение:

в пассивном залоге объект, над которым совершается действие, становится субъектом, т е дополнение становится подлежащим