阅读短文，根据语篇要求填空，使短文通顺、意思完整。每空限填一词。

    Mr. and Mrs. BrownEnglish teachers inmiddle school in Zhengzhou. They have some good friends in China. They love China, because they think it is nice. One evening, Mrs. Brown find her ring. The next day, she asks Mr. Smith help. Mr. Smith is their friend. He finds the ring  the school library. Mrs. Brown says,"Yes, the ring is mine. Thank you very much, Mr. Smith."