12. Your money is going to be stolen if you're not careful.

13. Have you been asked for your opinion?

14. A computer is used to do that job nowadays.

15. How is language learnt/learned?

16. Tea can't be made with cold water.

17. The window was broken and some pictures were taken away by the thief.

18. Where will you be sent by your company next year?

19. By whom were the children looked after when you were away?

20. I was paid a lot of money to do the job.

12. They are going to steal your money if you're not careful.

=> Your money is going to be stolen if you're not careful.

13. Has anyone ever asked you for your opinion?

=> Have you been asked for your opinion?

14. They use a computer to do that job nowadays.

=> A computer is used to do that job nowadays.

15. How do people learn languages?

=> How is language learnt?

16. You can't make tea with cold water.

=> Tea can't be made with cold water.

17. The thief broke the window and took away some pictures.

=> The window was broken and some pictures were taken away by the thief.

18. Where will your company send you next year?

=> Where will you be sent by your company next year?

19. Who looked after the children when you were away?

=> By whom were the children looked after when you were away?

20. They paid me a lot of money to do the job.

=> I was paid a lot of money to do the job.