1. arrived - was still sleeping

2. went - were having

3. was having - stopped

4. came - was working

5. were crossing - saw

6. saw - was standing

7. were playing - came

8. rang - was taking

9. was sitting - saw

10. were cleaning - came

1. When I arrived at this house, he was still sleeping 

( Khi tôi đến ngôi nhà này, anh ấy vẫn đang ngủ.)

2. The light went out while we were having dinner.

( Đèn tắt khi chúng tôi đang ăn tối.)

3. Bill was having breakfast when I stopped at this house this morning.

( Bill đang ăn sáng khi tôi dừng lại ở ngôi nhà này sáng nay.)

4. When I came to his house, he was working

( Khi tôi đến nhà anh ấy, anh ấy đang làm việc)

5. As we were crossing the street, we saw an accident.

( Khi chúng tôi đang băng qua đường, chúng tôi nhìn thấy một vụ tai nạn.)

6. Tom saw a serious accident while he was standing at the bus stop.

(Tom đã nhìn thấy một vụ tai nạn nghiêm trọng khi anh ấy đang đứng ở trạm xe buýt.)

7. The children were playing football when their mother came back home.

( Những đứa trẻ đang chơi bóng khi mẹ chúng trở về nhà)

8. The bell rang while Tom was taking a bath.

(Chuông reo trong khi Tom đang tắm)

9. He was sitting in a car when I saw him.

(Anh ấy đang ngồi trong ô tô khi tôi nhìn thấy anh ấy.)

10. We were cleaning the house when she came yesterday.

(Chúng tôi đang dọn dẹp nhà cửa thì cô ấy đến hôm qua.)

`#Study well`