помогите с англииским. active to passive

1.They are building a big church in Sarpi.
A big church ----------------------------------------------------------in Sarpi.
2.The police were following the thieves.
The thieves -----------------------------------------------------------by the police.
3.Sam has been taken to hospital.
They -------------------------------------------------------------to hospital.
4.They will announce the news tomorrow.
The news --------------------------------------------------tomorrow.
5.Animals are being used for medical products.
The scientists ----------------------------------------------------for medical products.
6.Three foreign language were taught at the University.
They ---------------------------------------------------------------at the University.
7.Nino had decorated the flat for Christmas.
The flat ------------------------------------------------------------
8.Kate was translating a poem the whole day yesterday.
A poem ------------------------------------------------------------

1.The houses are being rebuilt in Old Tbilisi.
They ----------------------------------------------------------in Old Tbilisi.
2.Tim was asked about the accident by the journalists.
The journalists ----------------------------------------------------about the accident
3.Cambridge publications have published Helen’s second book.
Helen’s second book ---------------------------------------------------------by Cambridge publications.
4.Air is polluted by gas.
Gas ----------------------------------------------------------air.
5.By the end of the last week we had made all the necessary preparations.
All the necessary preparations --------------------------------------------------------by the end of the last week.
6.When I entered the room, Mary was packing her suitcase.
When I entered the room the suitcase ------------------------------------------by Mary.
7.The police had arrested the thief by Monday
The thief --------------------------------------------------------by Monday.

8.They are writing an e-mail at the moment.
An e-mail ---------------------------------------------------------