1.The dishes have been washed by Sam.

2. He has just been given this task.

3. Have many cars been repaired by John?

4. This work hasn't been finished yet.

5. His bike has been stolen.

6. Have you ever been stung by bees?

7. We have never been attacked by dogs.

Объяснение:

1. The dishes have been washed by Pam.

2. He has just been given this task.

3. Have many cars been repaired by Ben?

4. This work has not(hasn't) been finished yet.

5. His bike has been stolen

6. Have you ever been stung by bees?

7. We have never been attacked by dogs.