1, i"m sorry. the dificult question can"t be answered
2,why wasn"t the floor cleaned before having lunch?
3,the letter wasn"t translated into vietnamese by the assistant
4,the meeting has to be attended by the staffs on sunday
6,what happend when the window was closed?
7,she hasn"t been met since you appeared
9,is folk song being listened?
10,will some many be lent to him?
11, she is said to be the most intelligent girl

1, The difficult questions can't be answered by me so I am sorry.
2, Why was the floor not cleaned by you before you had your lunch?
3, The letter wasn't translated into Vietnamese by the assistant.
4, The meeting has to be attended by the staffs on Sunday.
5, How many students are you taught, Bill ?
6, What happened when the window was closed?
7, She hasn't been met since you appeared.
8, Have they been told the truth about accident ?
9, Is folk song being listened?
10, Will some money be lent to him?
11, She is said to be intelligent girl.

1. The difficult questions can't be answered by me so I am sorry.
2. Why was the floor not cleaned by you before you had your lunch?
3. The letter wasn't translated into Vietnamese by the assistant
4. The meeting has to be attended by the staffs on Sunday
5. How many students are you taught, Bill ?
6. What happened when the window was closed?
7. She hasn't been met since you appeared
8. Have they been told the truth about accident ?
9. Is folk song being listened?
10. Will some money be lent to him?
11. She is said to be intelligent girl