—What’s the matter with John? —He’s had his leg ______ trying to save a boy from a fire.

The project, ______ by the Chinese engineers, was built in only two years.

---I thought you had planned to practise the piano today. ---No. I did nothing but _____ computer games all day.

In later years, people reported ____ a monster swimming across the lake.

________ his lessons , he failed in the exam.