二、单项 选择 （15分）
31. My brother and I _______ in the same school , but ______ are in different classes.
A. is , they B. are, we C. are, they D. am, we
32. Mr. and Mrs. Smith are not ____teachers. They are _____. Theirs ____on the ground floor.
A. theirs, ours, are B. their, ours, are
C. their, ours, is D. your, theirs, are
