单项选择题
We should not look down（） the poor people.
A.upon B.at C.to D.of
单项选择题 We saw him（）the white building and go upstairs.
单项选择题 We really enjoy ourselves at the party. Thanks again, Mr. and Mrs. Brown.（）Just drop in whenever you feel like it.
单项选择题 We often get（）when people cut in line.
