1. Son was invited to the water-fetching festival by Nam

2. He asked me if I knew Bill

3. Your bicycle will be repaired tomorrow afternoon by me

4. Mary asked me if I wanted to visit London

5. Would you mind opening the door?

6. Hundred of houses are built every year

7. It is a fire-making contest

1. Son was invited to the water- fetching festival by Nam.
-Bị động thì quá khứ đơn.

2. He asked me if I knew Bill.
-reported speech\

3. Your bicycle will be repaired tomorrow afternoon.
-Bị động thì tương lai đơn

4. Mary asked me if I wanted to visit London.
-reported speech\

5. Would you mind opening the door?
-mind+V-ing

6. Hundred of houses are built every year.
-Bị động thì hiện tại đơn: "every year"

7. Participants have to make a fire in this contest.
-> Người than gia phải làm một ngọn lửa trong cuộc thi này.

Xin hay nhất!!