Exercise 4. Make the sentences
passive. Use by... only if it is necessary to say who does / did
the action. The first sentence is done for you as an example:

1)
Shakespeare wrote "Hamlet". - "Hamlet" was written by
Shakespeare.

2) They have arrested her for
shoplifting. 3) They are repairing your car now. 4) People in Chile speak
Spanish. 5) My mother made this ring. 6) Electricity drives this car. 7)
Somebody will tell you where to go. 8) A drunken motorist knocked her down. 9)
Liverpool beat Manchester
3-0 yesterday. 10) The Chinese invented paper. 11) They don’t sell stamps in
bookshops. 12) The directors are still considering your application. 13) People
are using computers in all kinds of work.

2.She have been arrested for shoplifting.3.Your car is being repaired now.4.Sapinsh is spoken in Chile.5.This ring was made by my mother.6.This car is driven by electricity7.You will be told where to go.8.She was knocked down by a drunken motorist.9.Manchester was beaen by Liverpool.10.Paper was invented by Chinese.11.Stamps are not sold in bookshops.12.Your application was still  being considered by the directors.13.Computers is being used in all kinds of work.