Chuyển các câu sau sang câu bị động:
1. People must not leave bicycle in the hall.
2. Members can keep books for three weeks.
3. People should send their complaints to the main office.
4. You must turn off all the switches before leaving the room.
5. You must make an appointment in advance.
Chuyển các câu sau sang câu bị động:
1. People must not leave bicycle in the hall.
BICYCLE MUST NOT BE LEFT IN THE HALL.
2. Members can keep books for three weeks.
BOOKS CAN BE KEPT BY MEMBERS FOR THREE WEEKS.
3. People should send their complaints to the main office.
PEOPLE'S COMPLAINS SHOULD BE SENT TO THE MAIN OFFICE.
4. You must turn off all the switches before leaving the room.
ALL THE SWITCHES MUST BE TURNED OFF BEFORE LEAVING THE ROOM.
5. You must make an appointment in advance.
AN APPOINMENT MUST BE MADE IN ADVANCE