If possible, make a corresponding sentence with a passive form. If it is not possible, write "No passive"

1. They estimate that several people were injured in a bomb explosion.

2. Has everyone finished with these library books?

I have always enjoyed ………. (1.go) skiing, so when I saw some people ………… (2.snowboard), I decided ………. (3.give) it a try. It was more difficult ………… (4.do) than I had expected.

At first I found that I could not ………… (5.keep) my balance on a board as easily as on skis and it was almost impossible for me ……….. (6.go) any distance without ………. (7.fall).

I hate ………. (8.fail) at any sport, so I continued ……….. (9.try) and I finally managed ……….. (10.go) all the way down a slope without an accident. It was then that I realized what a great sport it is, and now I’d rather ……….… (11.go) snowboarding than skiing any day.