1) are built

2) was cleaned

1) The flood victims were helped to rebuiled their houses by the volunteer

2) She said that she would buy a robot when she had enough money

3) If this factory doesn't treat its waste well, there will be a lot of water pollution

4) He said he had decided to become an astronomer

5) While we were having dinner, the phone rang

1. are built (Câu bị động hiện tại đơn: am/is/are Vpp)

2. was cleaned (Câu bị động quá khứ đơn: was/were Vpp)

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1. The flood victims were helped to rebuild their houses by volunteer.

2. She said that she would buy a robot when I had enough money.

3. If this factory treats its waste well, there won't be a lot of water pollution.

4. He said that he had decided to become an astronomer.

5. While I was having dinner, the phone rang.