—You’ve won the drawing petition. Congratulations! Among all the pictures in the petition，I found was really amazing. By the way, when did you draw it?
—During the trip to the Sydney Opera House September.
A. yours; in
B. yours; on
C. you; in
D. you; on
网友回答
(答案→)A. yours; in
B. yours; on
C. you; in
D. you; on
解析：此题重点考查名词性的物主代词，其可以单独使用，yours=your picture在几月份要用介词in.