请指出以下句子中的不定式作什么成分。 1. To read English novels is a good way to learn English. 2. I hope to be admitted to a famous university . 3. His job today is to clean the floor and sweep the yard . 5. To keep fit , the students go out to play football every day. 6. He went out of the room, only to find nothing strange . 7. We must call on local government to give financial assistance to disabled people . 8. My advisor encourages me to take a summer course to improve my writing skill . 9. It is my ambition to make sure that the disabled people in our neighborhood have access to all public buildings .