The problem will be solved soon.
The glass is broken into small pieces.
These cars were made in the USA.
The Internet is used by people all over the world.
Many trees were planted in the school garden.
My book has been taken away.
I was not helped with my homework by him.
English has been learnt by us for three years.
Books are often read before bedtime by my father.
Some comic books were bought for her brother by Lan.
A letter was received by my sister yesterday.
The problem can be solved in just 2 minutes.
Electricity is used by people nowadays for lighting.

12. The problem would be solved soon
13. The glass was broke into small pieces
15. These cars had been made in the USA
16. The Internet had been used all over the world
17. Many trees had been planted in the school garden
18. My book had been taken away
19. I hadn't been helped with my homework by him
20. English had been learnt by us for three years
21. Books were read by my father before bedtime
22. Some comic books had been bought by Lan for her brother
23. A letter had been received by my sister yesterday
24. The problem could be solved by her in just 2 minutes
25. Electricity were used for lighting nowadays

1.the problem will be solved soon
2.the glass is broken into small species 
3. these cars were made in the usa
4.the internet has been used all over the world
5.many trees were planted in the school garden
6.my book has been taken away
7.i was not helped with my homework
8.english has been learnt for three years
9.books are often read by my father before bedtime
10.some comic books were read for  her mother by lan
11. a letter was received by my sister yesterday
12.the problem can be solved in just 2 minutes
13. electricity is used for lighting nowadays