This is the second time they have written to us about this.
This is the second time we have been written to about this.
People saw him steal your car.
He was seen to steal your car.
Someone has stolen my groceries!
My groceries have been stolen!
Who looked after the children for you?
By whom were the children looked after?
Who are they keeping in the kitchen?
Who is being kept in the kitchen?
The police have arrested 5 suspects.
Five suspects have been arrested (by the police).
How long have they waited for the doctor?
How long has the doctor been waiting for?
She helps me to all the difficult exercises.
I am helped (by her) to do all the difficult exercises.
What time can the boys hand in the papers?
What time can the papers be handed in (by the boys)?
A new dormitory ______ in the university campus now. (build)
A new dormitory is being built in the university campus now.
What books are people reading this year?
What books are being read this year?
They didn't look after the children properly.
The chidren weren't looked after properly.
Mrs Smith has taught us English for two years.
We have been taught English by Mrs Smith for two years.
The detective saw the woman putting the jewellery in her bag.
The woman was seen putting the jewellery in her bag (by the detective)