17 .
1.Her new book has been published recently by them .
2.Our local museum has been just opened by the town council
3.The house has been painted by them
4.The room has been cleaned by somebody
5 .My dress has been washed by someone
6. The dinner has been cooked by someone
7.A new theatre has been opened by them
8.The letters have been posted by somebody
18.
1. A new hospital had been built by them
2.The old library had been rebuilt by them
3.The city center had been turned into a real shopping area
4.A new fire station had been opened by them .
5.The names of some streets had been changed by them
6.the city exhibition hall had been closed by them