单项选择题
A.leaves B.would leave C.left D.had left
We think（）highly probable that our plan will work out.A...
单项选择题We think（）highly probable that our plan will work out.
A.them B.it C.what D.that
We should not look down（） the poor people.A.uponB.atC.t...
单项选择题We should not look down（） the poor people.
A.upon B.at C.to D.of
We saw him（）the white building and go upstairs.A.enter ...
单项选择题We saw him（）the white building and go upstairs.
A.enter B.entering C.to enter D.entered
