主动转换被动句

1、The machines in that factory are made by them
2、The monkeys are saw jump off the trees by them
3、......不就是被动的么......
4、The photos weren't showed to me by them
5、Was a bridge built here by them a year ago?
献丑啦~~先拿两分

1 machines are made by them in that factory
2 it is seen that monkeys jump off the tree
3 已经是被动了
4 the photos were not shown to me
5 a bridge was built a year ago

1.The machines have been made by them in that factory

2.The monkeys were seen jumping off the tree by them.

3.The murderer had been arrested,which was been reported.

4.The photos were not showed to me by them.

5.Was a bridge built here a year ago by them?