补全对话

补全对话
A:Did you read the story about "Dr Bethune"(白求恩医生)
B:Ye,I _____.
A:What did the story tell us _____?
B:It told us about a famous _____from_____.
A:When did he come to China?
B:In 1938.
A:_____ did he come to China?
B:He came to China to _____ the Chinese people.
A:Whay?
B:Because at that time,China was at war with Japan.He _____many soldiera'lives.
A:Woulad you tell me something more _____him?
B:Sorry.In 1939,he worked day and night _____ any rest.He became sick.At last he lost his life for the Chinese people.