Answer:
4. The fire alarm was tested by the electricians.
5. A new car was bought by my friend.
6. The bathroom was cleaned by John.
7. The blue jeans were invented by Levi Strauss.
8. A new kind of washing powder was developed.
9. The mountains were covered by snow.
10. The keys were given to me by the lady.
Explanation:
I did the first few questions for you to provide some examples. I'm not going to do your all work for you. Good luck!
