1. The book had been returned by Kathy to the library.
2. Is that course taught by professor Jackson.
3. Is your house being painted by Mrs Brown?
4.That theory was developed by Doctor Ikeda.
5.The small fishing village was destroyed by a storm
6.The Washington Monument is visited by hundreds of people every day
24. A new roof was put on last year
7.Paper, the main writing material were invented by the Chinese today
8.That picture was drawn by Jim's daughter
9.The dustbins are emptied every Thursday
10.Milk is delivered at about six o'clock
