被动语态的疑问句1.Must we hand in examination papers now?2.How did you make the model plane?3.You can keep the book for two weeks.你们说我该选谁

1. Must the examination papers be handed in now?
2. How was the model plane made?
3. The book can be kept for two weeks.

c

1. Must examination papers be handed in now ?
2.How was the model plane made (by you)？
3. The book can be kept for two weeks.

must examination papers be handed in now?
How was the model plane made?
The book can be kept for two days.

1.Must we hand in examination papers now?
-----Must the exam papers be handed in now
2.How did you make the model plane?
------How was the model plane made by you?
3.You can keep the book for two weeks-----The book can be kept for two weeks
---------How long can the book be kept (by me)

Must the examination papers be handed in by us now?
How did the model plane be made by you?
The book can be kept by you for two weeks