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1. She must be written to.
2. The president is said to be ill.
3. The keys were given to me by the lady.
4. An old bone is going to be shown to the students by the professor.
5. A new computer software has been installed by Jack.
6. A new type of washing powder is being developed by them.
7. Whom was it said by?
8. Sue was told to give up smocking by Rick.
9. We were expected to build the road.
10. The mountains are covered in snow.