根据短文内容，从A、B、C、D四个选项中选出一个能填入相应空格内的最佳答案。
J. K. Rowling is the writer ofHarry Potter,which is now one of the best-sellers in the world. She 1born in Britain on July 31st, 1965. She had one sister who was two years 2 than her. Both girls liked 3 to their father's bedtime stories. They especially loved stories about magic. Rowling wrote her first story 4 the age of six.
On a long train trip in 1990, an idea came to her. She wanted to write about a boy who had magic but he didn't know it. In 1992, Rowling began 5 the firstHarry Potterbook for young 6. It appeared in June, 1997. The book was a great success. And the film came out in November, 2001. Now theHarry Potterseries (系列) is 7 with people of all ages and about sixty 8 books were sold in 200 countries. In this series, Harry is an ordinary boy: polite, friendly, brave and clever. So when children read about Harry, they can imagine being like him. That's 9 theHarry Potterseries has been so popular.
J. K. Rowling is very 10 with the success. Now she's really enjoying life. She said she would go on writing children's books.