1.The letters were typed in the office by Mary.

2.I will be helped by your father tomorrow.

3.The human life have been completely changed by science and technology.

4.This bottle was broken by Peter.

5.English is being learnt in the room.

6.My mind couldn't change by anything.

7.I had been told about it.

8.Her telephone number isn't known by me.

Câu 9 ko đủ đề ở sau nhé.

Chúc bạn học tốt ^_^!!!
(Nếu thấy hay hãy vote 5*,cảm ơn và bình chọn là câu trả lời hay nhất để mik có động lực giải tiếp các BT khác nhé!)

1.Letters are typed by Mary in the office.

2.I will be helped by his father tomorrow.

3.Human life have been completely changed by Science and Technology.

4.This bottle was broken by Peter.

5.English is being learnt in the room.

6.My mind can be changed by nothing.

7.I hadn't been told about it by no one.

8.Her telephone number isn't known.