Question

句型转换：1、We clean our classroom twice a day . (改为被动语态）

Our classroom ____ ____ twice a day .
2、The teacher gave me a book .(改为被动语态)
I ___ ____ a book by the teacher .
3、Is the song sung by Sun Nan ?(改为主动语态）
____ Sun Nan ____ the song ?
4、The boss made the workers work 12 hours a day .(改为被动语态）
The workers ____ ____ ____ ____ 12 hours a day by the boss .

Answer 1

1. is cleaned

2. was given

3. Does... sing

4. were made to work

祝你学习进步，更上一层楼！ (*^__^*)
不明白的再问哟，请及时采纳，多谢 !

Answer 2

答案依次是：
1. is cleaned

2. was given

3. Did sing

4. were made to work

答案保证准确，希望帮到你！

Answer 3

1、We clean our classroom twice a day . (改为被动语态）
Our classroom is cleaned twice a day .
2、The teacher gave me a book .(改为被动语态)
I was given a book by the teacher .
3、Is the song sung by Sun Nan ?(改为主动语态）
Does Sun Nan sing the song ?
4、The boss made the workers work 12 hours a day .(改为被动语态）
The workers are made to work 12 hours a day by the boss .

Answer 4

Our classroom is cleaned twice a day.
I was given a book by the teacher.
Did Sun Nan sing the song ?
The workers were made to work 12 hours a day by the boss.