1 . Look at some pictures and appreciate the past participle by answering the functions of it.

1.a broken vase	2.an injured player
3.a bridge built in 1937	4.make themselves heard

1. ________
2. ________
3. ________
4. ________

2 . Their habitats were becoming smaller as new roads and railways were built.
________________, 它们的栖息地变得越来越小。