1........is usually locked carefully.

2......is kept in the bedroom on the second floor.

3......was stolen by the thieves.

4......was told about it.

5......was checked by the police.

6......in this house was questioned by the police.

7......was surrounded by the police.

8.......were caught.

Passive voice:
1. We usually lock the safe carefully.
The safe..... is usually locked carefully 
2. We keep the safe in the bedroom on the second floor.
The safe.... is kept in the bedroom on the second floor

3. Yesterday the thieves stole everything in it.
Yesterday everything in it was stolen by the thieves 
4. We told the police about it.
The police.....were told about it 
5. The police checked everything n the house.
Everything in the house was checked by the police 
6. The police questioned everybody in the house.
Everybody iin the house was questioned by the police 
7. The police surrounded the house.
The house was surrounded by the police 
8. The police did not think that they caught the thieves.
The police did not think that the thieves. were caught 

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