1. This man doesn't speak German.

German isn't spoken by this man.

2. We help her every day.

She is helped every day.

3. Does Eric drive these cars?

Are these cars driven by Eric ?

4. My mom is making chocolate cakes in the chicken at this moment.

Chocolate cakes are being made in the chicken by my mom at this moment.

5. Is Sheila drinking a cup of tea?

Is a cup of tea being drinked by Sheila ?

6. The girl wasn't eating the pizza.

The pizza wasn't be eaten by the girl.

7. She did a lot of homework yesterday.

A lot of homework was done yesterday.

8. I didn't know the news.

The news wasn't be known.

9. Did Tom see them at the bus station last night?

Were they seen at the bus station by Tom last night?

10. I have already read the books about Japanese culture.

The books about Japanese culture have already been read.

11. No one has answered the questions.

The questions haven't been answered.

12. Has Sonia phoned him yet?

Has he been phoned by Sonia yet ?

13. I had worn white shoes.

White shoes had been worn.

14. Nobody had noticed me.

I hadn't been noticed.

15. She shouldn't make mistakes in the test.

Mistakes shouldn't be made in the test.
16. Students can use dictionaries during the test.

Dictionaries can be used during the test by students.
17. Can they write a good story?

Can a good story be written ?

=>
1. German isn't spoken by this man.
2. She is helped by us every day.
3. Are these cars driven by Eric?
4. Chocolate cakes are being made in the kitchen by my mom at this moment.
5. Is a cup of tea being drunk by Sheila?
6. The pizza wasn't being eaten by the girl.
7. A lot of homework was done by her yesterday.
8. The news wasn't known by me.
9. Were they seen at the bus station by Tom last night?

10. The books about Japanese culture have already been read by me.
11. The questions have not been answered.
12. Has he been phoned by Sonia yet?
13. White shoes had been worn by me.
14. I hadn't been noticed.
15. Mistakes shouldn't be made in the test by her.
16. Dictionaries can be used during the test by students.
17. Can a good story be written by them?