Passive voice + PRESENT
the windows / ought to / open by my mother
the windows ought to be opened by my mother
the shoes / buy
the shoes were bought
the test / should / tell
the test shouldn't be told
He cooked dinner in my house last night.
Dinner was cooked last night.
The postman delivers the letter.
The letter is delivered by the postman.
the song / have to / sing / by the original singer
the song have to be sung by the original singer
the car / wash
the car was washed
these computers / sell
these computers aren't sold
dinner/ couldn't / serve
dinner couldn't be served
They took the books to the library.
The books were taken to the library.
the shops/ must / close
the shops must be closed
I must threw away the garbage yesterday.
The garbage must be thrown away
I drive the car to my house every day.
The car is driven every day.
The parents didn't pick up the children.
the children weren't picked up by their parents.
She must have invited her lover.
Her lover must have been invited.
the food / eat
the food is eaten
the letter / send
the letter was sent
the tables / clean
the tables aren't cleaned
We should have informed the police.
The police should have been informed
PRESENT:
They should water the plants once a day.
The plants should be watered once a day.
The secretary prints the documents.
the documents are printed by the secretary.
He / should / not / slept / in class
He shouldn't be slept in class.
They don't turn off the lights when they leave.
the lights aren't turned off when they leave.
The architect should have built the house last year.
the house should have been built last year.
Question in the past:
Did the teacher give the marks?
Were the marks given by the teacher?