22. By whom were the children looked after when you were away?
23. Look! The seals is being fed
24. The book had been returned to the library by Kathy
25. By this time tomorrow, the announcement will have been made by the president
26. People's breathing was being affected by the pollution in the city
27. Those papers haven't been signed by Mrs Andrew. Have they been signed by Mr Andrews yet?
28. is that Airplane Being Flown By A Student Pilot?
29. Where Was the 1988 Olympic Games held ? 
30. Are those tractors made in this country, or are they imported
__Xong nhé_

the floor was being cleaned by them when i arrived
the hole in the wrong side of the road is being digged 
your money is being gone to steal if you are not careful
Have you asked for your opinion?
I wasn't impressed by Alan's knowledge of art
How were candles made?
Tea couldn't be made with cold water
When is the result of the contest going to be annouced?
The police wasn't imformed that there had been a mistake
where will you be sent by your company next year? 
By whom were the children looked after when you were away?
Look! The seals is being fed
The book had been returned to the library by Kathy
By this time tomorrow, the announcement will have been made by the president
People's breathing was being affected by the pollution in the city
Those papers haven't been signed by Mrs Andrew. Have they been signed by Mr Andrews yet?
is that Airplane Being Flown By A Student Pilot?
Where Was the 1988 Olympic Games held ? 
Are those tractors made in this country, or are they imported