3.
1 The windows will be cleaned.
2 A lot of money is spent on food by people.
3 Sue's car is washed by her.
4 A story was told the children by a grandmother.
5 The new sports center will be opened soon by them .
6 Some holiday picture were showed me by Liz.
7 The essays will be marked by a theacher.
8 The grass isn't cut by Clive.
9 The car wasn't repaired this week by them.