=>
20. The passage will be read 3 times by the examiner.
-> bị động TLĐ will be V3/ed
21. The town was destroyed by an earthquake.
-> bị động QKĐ was/were (not) V3/ed
22. The letter wasn't typed (by him) last night.
-> bị động QKĐ
23. The keys were returned to me by a man.
-> bị động QKĐ
24. That building has to be pulled down.
-> bị động have/has to be V3/ed
25. 3 shirts can be sewed a day.
-> bị động can be V3/ed
26. This room hasn't been used for ages.
-> bị động HTHT have/has (not) been V3/ed
27. I am being followed.
-> bị động HTTD is/am/are (not) being V3/ed
28. Football is not being played by us.
-> bị động HTTD is/am/are (not) being V3/ed
29. A story is going to be told by the teacher.
-> bị động is/am/are going to be V3/ed
30. The book isn't opened by him.
-> bị động HTĐ is/am/are (not) V3/ed
31. Could the door be locked by Jenny?
-> bị động could S be V3/ed?
32. Has the problem been solved by her?
-> bị động HTHT have/has S been V3/ed?
33. Has he been phoned by her?
-> bị động HTHT