单项选择题
We saw him（）the white building and go upstairs.
A.enter B.entering C.to enter D.entered
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.
单项选择题 We need some toothpaste.（）
