1 The window is closed by Susan.
2 The car is driven by Lucille.
3 A cake is being eaten by us.
4 The letters will be brought by the postman.
5 The flag is waved by the guard.
6 This plate was made in 1760.
7 A dictionary must be used.
8 The postman will be bitten by that dog.
9 Many plays were written by Shakespeare.
10 Are the questions understood by you?