Turn from ACTIVE into PASSIVE:
21.He has to pay the bill. ........................................................
22.For the time being, Alice is teaching that group. ........................................................
23. She has finished the report. ........................................................
24.The police have arrested five suspects. ........................................................
25.The mad dog bit the little boy.
26.The teacher corrects our exercises. ........................................................
27.Mr. Smith saw the accident. ........................................................
28.They started a dancing class last week. ........................................................
29.You should insure the package. ........................................................
30.He may pay the bill for us. ........................................................
31.You ought to water the plants once a week. ........................................................
32.The mailman is delivering the mail now. ........................................................
33.Somebody has taken my briefcase. ........................................................
34.The doctor ordered him to take a long rest. ........................................................
35.Lightning struck the house. ........................................................
36. When will you do the work? ........................................................
37 How are you going to deal with this problem? ........................................................
38. How do you spend this amount of money? ........................................................
39. I wonder whether the board of directors will choose Susan or Jane for the position. ........................................................
40. How did the police find the lost man? ........................................................
21.They have to separate the rice from the husk.
-> The rice has to separated from the husk by them
22.He shouldn’t do that silly thing.
-> That silly thing shouldn't be done by him
23.The boy operates that tape-recorder.
-> That tape-recorder is operated by the boy
24.They gave us a post card.
-> A post card is given for us by them
25.The student cleaned the room every day.
-> The room was cleaned by the student every day
26.I had lost some of my books.
-> Some of my book had been lost by me
27.We believe these boys to become better.
-> These boy are believed to become better
28.The scientists found the problem.
-> The problem was found by the scientists
29.The cat pulls the pan into the sink.
-> The pan is pulled into the sink by the cat
30.He gives her a novel about a love story.
-> A novel about a love story is given her by him
21.They have to separate the rice from the husk.
-> The rice has to separated from the husk by them
22.He shouldn’t do that silly thing.
-> That silly thing shouldn't be done by him
23.The boy operates that tape-recorder.
-> That tape-recorder is operated by the boy
24.They gave us a post card.
-> A post card is given for us by them
25.The student cleaned the room every day.
-> The room was cleaned by the student every day
26.I had lost some of my books.
-> Some of my book had been lost by me
27.We believe these boys to become better.
-> These boy are believed to become better
28.The scientists found the problem.
-> The problem was found by the scientists
29.The cat pulls the pan into the sink.
-> The pan is pulled into the sink by the cat
30.He gives her a novel about a love story.
-> A novel about a love story is given her by him