Chuyển các câu phủ định và nghi vấn sau đây sang dạng bị động :
1, Did Sue draw this picture?
=> Was this picture drawn by Sue?
2, William will not repair the car.
=> The car won't be repaired by William.
3, Could you feed the dog?
=> Could the dog be fed ?
4, Who wrote this letter?
=> By whom was this letter written?
5, We do not clean our rooms.
=> Our rooms aren't cleaned .
6, Does Nam visit the school library every day?
=> Is the school library visited by Nam everyday ?