1.Tân has opened the door.

The door has been opened by Tan

2. People have cut many trees in forests.

Many trees in forests have been cut
3. Someone has taken away the picture.

The picture has been taken away

4.They have built a market near my house.

A market has been built near my house 

5. Has the surgeon performed the operation?

Has the operation been performed by the surgeon?

6. Lionel has signed the contract.

The contract has been signed by Lionel

7. Our salesmen have sold all the carpets.

All carpets have been sold by our salesmen
8. Zookeepers have captured the lion in the forest.

The lion in the forest has been captured by zookeepers 

9. Dr. Phillips have treated all the patients.

All the patients have been treated by Dr.Philips

10. Have the customers paid you?

Have you been paid by the customers?

11. Everybody has celebrated Joana's birthday.

Joana's birthday has been celebrated