Hãy chuyển các câu sau sang dạng bị động 1.The date of the meeting will have to be changed again (Tương lai đơn) -> 2. She will be picked up at the airpot by me (Tương lai đơn) -> 3. The machine was operated while the film was being watched ( Quá Khứ Đơn ) -> 4. How long has the letter been written ? ( Hiện tại hoàn thành ) -> 5. When was she recognized? ( Quá khứ Đơn) -> 6. I want to be helped by her (Modal verlos) -> 7. Twenty pages have been read so far (Hiện tại hoàn thành) -> 8. The bad news shouldn't be announced widely (modal verlos) -> 9. She was accepted á an accountant by him ( Quá khứ đơn ) ->