turn into passive forms: they sell jeans all over the world : jeans..... they have built two department stores this year : two department stores....... the doctor has operated Tom since 10 o'clock : Tom ...... A man returned the keys to me :the keys..... they made jean cloth completely from cotton in the 19th century : jean cloth the teacher won't correct the exercises tomorow : the exercises... My cousin will meet you at the staion : you... He can't repair my bike : my bike...... We can slove the problem : the problem.... You must do this exercise carefully : this exercises.... pople should stop experiments on animals : experiments on animals.... we might find life on another planets : life we have to inprove all the schools in the city :all the schools in the city..... they are going to build a new bridge in the area: A new bridge

they sell jeans all over the world : jeans are sold all over the world

they have built two department stores this year : two department stores have been built this year.

the doctor has operated Tom since 10 o'clock : Tom has been operated since 10 o'clock

A man returned the keys to me :the keys were returned by a man

they made jean cloth completely from cotton in the 19th century : jean cloth was made completely from cotton in the 19th century

the teacher won't correct the exercises tomorow : the exercises won't be corrected tomorrow

My cousin will meet you at the staion : you will be met by my cousin at the station

He can't repair my bike : my bike can't be repaired by him

We can slove the problem : the problem can be solved by us

You must do this exercise carefully : this exercises must be done carefully

pople should stop experiments on animals : experiments on animals should be stopped

we might find life on another planet : life might be found on another planet

we have to improve all the schools in the city :all the schools in the city have to be improved

they are going to build a new bridge in the area: A new bridge is going to be built

1. Jeans are sold all over the world.

2. Two department stores have been built this year.

3. Tom has been operated by the doctor since 10o'clock.

4. The keys were returned to me by a man.

5. Jean cloth was made completely from cotton in the 19th century

6. The exercises won't be corrected by the teacher tomorrow.

7. You will be met at the station by my cousin.

8. My bike can't be repaired.

9. The problem can be solved.

10. This exercises must be done carefully.

11. Experiments on animals should be stopped.

12. Life might be found on another planets.

13. All the schools in the city have to be inproved.

14. A new bridge is going to be built in the area.