1 The cake was ate by Nelly
2 The windows was opened by They
3 This present was bought by We
4 His flat last summer was sold with He
5 English songs was sang by We
6 In the park was My friends saw Marry
7 The key was found with children
8 The burglars wear the police arrested
rocked
killed
treated
cared for
destroyed
damaged
Я думаю это правильно.