Change the following sentences so as to use the complex subject

Change the following sentences so as to use the complex subject with the infinitive in the correct form. Underline the complex subject.
E.g. A group of people at the gangway saw that the boat came into harbour. The boat was seen to come into harbour.
1. It appeared that he had done it well.
2. The man had read his paper, it seemed.
3. It is believed that his advice was ignored.
4. We expect the letters to arrive on Friday.
5. It is known that he refused office in the interests of his profession.
6. They say Kilimanjaro is the highest mountain in Africa.
7. We believe that some members of the action committee spoke yesterday.