单项选择题
A. He was born blind. B. He became blind as a result of an accident. C. After taking some medicine, he became blind.
A. He hved in the 170Os. B. He lived in the 1800s. C. He lived in the 190Os.
A. The time is so late. B. Jack wants to take the children to see a film. C. Jack has a lot of work to do.