Đáp án:
1. After David had gone home, we arrived.
2. Before we had lunch , we took a look around the shops.
3. When we got out of the office, the light had gone out,
4. By the time we started our work, she had explained everything dearly
5. Before my mother came home, my father had watered all the plants in the garden
6. Ann will be invited to the party by Bill.
7. That letter wasn't written.
8. The White House is visited by hundreds of people every day
9. This fact isn't known veery well.
10. Are the dishes washed every day
11. Hat play was written by Shakespeare.
12. A new ring road is being opened round the city.
13. Nothing has been moved in your room.
MÌNH CHỈ BIẾT TỚI ĐÂY THÔI. SORRY NHA
CHÚC BẠN HỌC TỐT (^^)