passive voice

Fili and Felix clean the school.

• Fili and Felix cleaned the school.

• The school is cleaned by Fili and Felix.

• The school are cleaned by Fili and Felix.

The doctor will check the patients.

• The patients were checked by the doctor.

• The patients will check the doctor.

• The patients will be checked by the doctor.

We use this room only for special occasions.

• This room are used only for special occasions.

• This room was use only for special occasions.

• This room is used only for special occasions.

The thief robbed the crown.

• The crown is robbed by the thief.

• The thief is robbed by the crown.

• The crown was robbed by the thief.

Someone cleaned my shoes.

• My shoes were cleaned.

• My shoes by someone were cleaned.

• My shoes are being cleaned.

My students can answer this exercise.

• My exercise can answer these students.

• This exercise can be answered by my students.

• This exercise can answered by my students.

This problem .... by your brother yesterday

• a) was solved

• b) will be solved

• c) is solved

• d) solves

the house ______________________yesterday

• was cleaned

• was cleaninng

• is cleaning

• is cleaned

Electricity .... by Thomas Alva Edison.

• invented

• was invented

• will invent

• will be invented

London is visited ...

• with millions of tourists.

• by millions of tourists.