10. How many ways can you solve this problem?
=> how many ways this problem can be solved ?
11. He gave the agazine back to me
=> the agazine back was given to me.
12. Tom borrowed this book from library last Monday
=> this book was borrowed from library last monday by tom.
13. Someone turned on the light and opened the door
=> the light was turned on and the door was opened.
14. Lan left her bag in the classroom
=> lan's bag was left in the classroom by her.
15. They haven't submitted the assignments to teacher yet.
=> the assignments haven't been submittd to teacher yet.
16. They brought their children up Italy
=> their children was brought up Italy.
17. After 10 minutes he will call us in
=> we will be called in after 10 minutes.
18. They are repairing my piano now
=> my piano is being repaired now.