1. They can’t make tea with cold water.
->Tea can't be made with cold water.
2. The chief engineer was instructing all the workers of the plant.
-> All the workers of the plant were being instructed by the chief
3. Somebody has taken some of my books away.
-> Some of my books have been taken away
4. They will hold the meeting before May Day.
->The meeting will be held before May Day
5. They have to repair the engine of the car.
->The engine of the car has to be repaired
6. The boys broke the window and took away some pictures.
->The window was broken and some pictures were taken away by the boys
7. People spend a lot of money on advertising everyday.
->A lot of money is spent on advertising everyday
8. They may use this room for the classroom.
->This room may be used for the classroom
9. The teacher is going to tell a story.
->A story is going to be told by the teacher
10. Mary is cutting the cake with a sharp knife.
->The cake is being cut with a sharp knife by Mary
