Giúp mình chuyển thành câu bị động với: 6. The athletes might visit some interesting places after Sea-Games. …………………………………………………………….………………….. 7. Lan’s parents have to clean up their house before Tet holidays. …………………………………………………………….………………….. 8. They must keep fruit in the fridge for long. …………………………………………………………….………………….. 9. You can’t wash this dress. ................................................................................... 10. You should open the wine about 3 hours before you use it. ...................................................................................... 11. Members may keep books for 3 weeks. ..................... ............................................ 12. Passengers shouldn’t throw away their tickets as inspectors may check them during the journey. ..................................................................................................... 13. They ought to have reported the accident to the police. .....................................................................................................