Make sentences the passive . use "by" only if it is necessary to say who does/did the action
1.Tolstoy wrote"War and Peace
2. People in Chile speak Spanish
3. My mother made this dress
4. Somebody will tell you what to do
5.Spartak" beat"Dynamo" 3:0 yesterday
6.Electricity drives this car
7.We don't sell meat here. It's the greengrocer's
8.They are painting the room now, we can't work there
9.They are still discussing the problem
10.Has anybody asked Peter?
11.Somebody gave me your address in Russia
12.They have stopped him for driving too fast.
13. one day doctors will find a cure for AIDs.
14.somebody has painted horrible pictures on the walls.
15.hey are going to built a motorway through the village.
16. omeone is going to teach ltalian at our school.