1. His being obeyed is your duty.
2. This needn't have been done by you.
3. This switch isn't touched.
4. She was considered to have been the best doctor that Australia has ever produced.
5. It has to be seen to be believed by you.
6. Your duty fingers aren't wiped on my clean table cloth.
7. He wasn't let know what I was thinking.
8. It's necessary for your lessons to be concentrated by you.
9. Anything can't be done unless more information is given us.
10. Books may be kept by members for three weeks, after that they must be returned.
@Tham khảo