=>
16. The newspapers are delivered by Tom every morning.
-> bị động HTĐ is/am/are V3/ed
17. The window was broken by the boys.
-> bị động QKĐ was/were V3/ed
18. A lot of money is spent on advertising everyday.
-> bị động HTĐ is/am/are V3/ed
19. The women with a red hat were looked at by the children.
-> bị động QKĐ was/were V3/ed
20. English is spoken all over the world.
-> bị động HTĐ is/am/are V3/ed
21. This machine isn't used after 6:30 p.m.
-> bị động HTĐ is/am/are (not) V3/ed
22. His story isn't believed.
-> bị động HTĐ is/am/are (not) V3/ed
23. The wall is often cleaned before it is painted.
-> bị động HTĐ is/am/are V3/ed
24. Milk is used for making butter and cheese.
-> bị động HTĐ is/am/are V3/ed
25. Was that letter written by your sister?
-> bị động QKĐ was/were S V3/ed?