=>

Ex3/
1.  That cake wasn't made by Alice
2. Newspapers are bought everywhere in the city
3. A textbook will be published by that company next year
4. Milk is delivered by her at about 6 o'clock
5. The room is cleaned every day
Ex4/
1. I was asked several difficult questions by a man at the interview.
2. He will probably be sent back to Britain.
3. This kind of bird is now found in only a few remote places in Scotland.
4. Rice is grown in the north.
5. Cows aren't raised on our farm by us.

Ex 3:

1. That cake wasn't made by Alice.

→ câu bị động thì QKĐ: S + was/were + V3/ed + (by+O) + time

2. Newspapers are bought everywhere in the city.

→ câu bị động thì HTĐ: S + is/am/are + V3/ed + (by+O) + time

3. A textbook will be published by that company next year.

→ câu bị động thì TLĐ: S + will + be + V3/ed + (by+O) + time

4. Milk is delivered at about six o'clock.

5. The room is cleaned everyday.

Ex 4:

1. I was asked several difficult questions at the interview by a man.

2. He will be probably sent back to Britain. 

3. This kind of bird is found in only a few remote places in Scotland.

4. Rice is grown in the north.

5. Cows aren't raised on our farm.