Should Jane be helped with the sewing?
Must the test be finished before 10?
All travel expenses must be paid by the employers for the training course.
He will be seen off by all his friend at the airport.
The letter might be sent to the wrong address.
Your money are going to be stolen if you're not careful.
When are the results of the contest going to be announced?
Our teeth should be cleaned twice a day.
Tom's parents will be visited by him next month.
These old pictures won't be hung in the living room.
This house and these cars are going to be painted by the Greens for Christmas Day.
Some new airports will be constructed on islands.
This promise might be fulfilled by the new president as quickly as people would like.
The mystery are going to be found out.
Videos like this one can be bought anywhere.
The history of the European Community has to be written one day.
Where will you be sent by your company next year?
***
Câu pasive voice không phải lúc nào cũng cần kèm theo "by ..." nhé
Ví dụ như câu 1, "Họ có nên giúp Jane không?""đổi sang câu bị động sẽ là "Jane có nên được giúp đỡ không?", nếu cho thêm "bởi họ" vào sẽ khiến câu mất tự nhiên.
Một số giáo viên chấm chặt hồi trước sẽ quan tâm cái này, nhưng lớp 12 rồi thì hầu hết giáo viên sẽ loại "by..." ra khỏi câu, thậm chí một số người sẽ trừ điểm đấy :)
Chúc bạn học tốt!