1) We have waited for them for 3 hours.
-> They have been waited for for 3 hours.
2) Mai phoned me again and again .
-> I was phoned again and again by Mai.
3) Were they repainting the front door ? - No , they had done it .
-> Were the front door being repainted? - No, it has been done.
4) They sang Chrismas carols in the church .
-> Christmas carols were sung in the church.
5) May I borrow your books , Hoa ?
-> May your books be borrowed by me, Hoa?
6) Has Peter ever visited our country ? - Yes , he spent his holiday here last year .
-> Has our country ever been visited by Peter? - Yes, his holiday was spent here last year.
7) How did she hand in her form ?
-> How was her form handed in?
8) They unlocked the door and someone stole the mobile phone .
-> The door was unlocked and the mobile phone was stolen.
9) How can you improve your position ?
-> How can your position be improved?
10) You must not waste your time on playing games or reading pictures stories .
-> Your time must not be wasted on playing games or reading pictures stories.
11) The bank was broken into yesterday . (từ câu này trở đi là BĐ sang CĐ nha bn)
-> Someone broke into the bank yesterday.
12) The patiens in the accident were taken to the hospital by us .
-> We took the patients in the accident to the hospital.
13) Will the speech be given by the monitor ? - No , it will not .
-> Will the monitor give the speech? - No, he will not.