问题

Had I known about this computer program, a huge amount of time and energy ________.[ ]

A: would have been saved
B: had been saved
C: will be saved
D: was saved

正确答案是：

同类题型

In my view, London’s not as expensive in price as Tokyo,but Tokyo is ________ in traffic [ ]

You have to eat andtake more if you want to be .

Everyone_______him,because he is friendly.

The result might not as satisfactory as expected butthe ________ on his face told us that he was very happy

Who is the man ______ by a group of students there—A professor _____ research on physics.