1) I went to visit the American author who wrote a number of books about China.

　　2) I ate the soup my aunt prepared.

　　3) I have an arrangement with my bank, by which they let me use their money and repay them next month.

　　4) He sent her a letter, in which he said that he was sorry for what he had done to her.

　　5) Mr. Brown, who just came from Britain yesterday, will teach us accounting this term.

　　6) She is going to spend the winter holidays in Hainan, where she has some relatives.

　　7) The United States is known for its supermarkets, where huge quantities of all kinds of food and household articles are sold.

　　8) The story happened in late 19th century, when China is suffering from the invasion of western powers.