Do you know Stephen Hawking? He's one of the most well-known____（scientist）on space and time in the world. He was born in England in 1942. Hawking is ____（study）how the universe began and how it ends.

    When he studied math and science at Oxford University, he fell____(serious) ill, which made him unable to speak or breathe. Till now, he can't move or feed____(him). however, he has a wheelchair with ____ special computer, with which he can communicate with others.

    ____he was facing all these difficulties, he refused to give up his hope of living. Because____ his illness, it was difficult for him to draw diagrams or to write. So he started____(think) in pictures. With this new way of thinking, he is respected by people in the world.

    Once he____(invite) to China to give lectures. His self-confidence and humorous conversations impressed us deeply.

    He once said, “When something unfair happens,____ is no need to worry about it! You just have to do the best in your own situation.”