1 . Leslie Nielsen’s ________ (devote) to acting is wonderfully inspiring. (所给词的适当形式填空)

2 . Working this way for one year was________ (pain) enough, let alone a lifetime. Before long I decided to make a change. (所给词的适当形式填空)

3 . It was built originally ________ (protect) the city in the Tang dynasty and has now been completely restored.(所给词的适当形式填空)