Stephen Hawking，who was born in England in 1942，has died at the age of 76．He was one of the （1）

greatest

greatest

（great）scientists on space and time in the world．Hawking spent his whole life （2）

studying

studying

（study）how the universe started and how it ends．
    （3）

When

When

he studied math and science at Oxford University，he got serious illness which made him unable to speak or breathe．He also couldn't move or dress （4）

himself

himself

（he）．However，he had（5）

a

a

wheelchair with a special computer，with which he could communicate with others．
    Though he was facing all these（6）

difficulties

difficulties

（difficulty），he refused to give up his hope of living．Because of his illness，it was difficult （7）

for

for

him to draw diagrams or to write．So he （8）

began

began

（begin）thinking in pictures．With this new way of thinking，he is respected by people in the world．
    Once he was invited to China to give lectures．We were touched by his self-confidence and humorous conversation（9）

deeply

deeply

（deep）．
    He once said，"When something unfair happens，（10）

there

there

is nothing to worry about！You just have to do the best in your own situation．"