问题补充：
—Do you know the man wearing a pair of glasses?
—Yes. He’s a teacher of . He teaches History.
A. me; us
B. my; our
C. mine; us
D. mine; our
答案：
A. me; us
B. my; our
(答案→)C. mine; us
D. mine; our
解析：a teacher of mine我的老师中的一位，双重所有格形式；teach sb sth.sb要用宾格形式。句意：你认识那个戴眼镜的男人吗？认识，他是我的老师。他教我历史。
