明天就要交了!Please help me!

明天就要交了!Please help me!
任务型阅读：
Robert Green was 31 years old when he went to college.That was his first time to come into the classroom.Eleven years later.Robert Green received a doctor's degree in physics.
From a young age,Robert Green lived a poor life with his grandfather in the mountains of Boston.His grandfather taught him to read math books and physics books.From time to time,he bought old books with his saved money and read them all.At that time few people in Robert's neighborhood knew about his love of reading and learning.But one person,Jane Keller knew him.She worked in a library.Robert used to go there and he read everything in it.She suggested books for him to read.
A year later,he entered Bethel College.He was interested in everything that he had never seen before.He got an "A" in every subject.To his teacher's surprise,he finished college in three years.His teachers encouraged him greatly and he continued his education at Stanford University.
1.How old was Robert Green when he became a college student?
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2.What did Robert buy with his saved money?
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3.Where did Jane Keller work?
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4.Did Robert get an "A" in every subject in Bethel College?
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5.Why were Robert's teachers surprised him?
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