бинарные соединения кальция

Помогите пожалуйста!!! 

Exercise 5. Write passive sentences.
1) Chinese (to speak)in Singapore. 2) The Tower of London (to build)around the 2nd
century 3) The new hospital (to open)next year. 4) She (to interview)now. 5) I realized I (to follow).6) You (to invite)to Andy’s party? 7) He found that all his money (to steal).8) These computers (to make) in Korea. 9) Passengers (to ask)not to speak to the driver. 10) Sorry about the noise -the road (to mend). 11) The village church (to born down)last year. 12) A Roman pavement (just find)under Oxford Street.

Прогшу,помогите!!! 

Exercise 9. Transform the sentences to the passive:

They owe a lot of money to the bank.
You can buy videos like this one anywhere.
Someone has to write the history of the European Community one day.
Someone may have already written the history of the European Community.
When we arrived home, we found that someone had broken one of our windows.
They have sold their car to pay their debts.
The manager always welcomes new employees.
They are building a new supermarket near the church.
They fought the battle in i623.
Someone was cleaning the windows while I was there.
Someone has moved my desk!
They are taking the refugees to a camp outside the village.
Someone has singed all the documents before I arrived.
They were questioning us and searching our vehicle at the same time.
They will post our letters when the ship arrives at the next port of call.
They are opening the case again because they’re not satisfied with the verdict.
Have you changed anything?
How soon will they repeat that TV program?
Have you prepared all the documents?
Have the tested all the machines?

 What are they building over their?