The old couple have been married for 40 years and never once __________ with each other.
| A．they had quarreled | B．they have quarreled |
| C．have they quarreled | D．had they quarreled |
第一部分语言知识运用
第一节单项填空（共15小题，每小题1分，满分15分）
—Mike, you’ve got a “D” in physics. ________?
—Well. I find the subject hard and I think I’ll drop it for History next term.
| A．What if | B．How come | C．Why not | D．So what |
—Ted found a policeman passing by and handed the mobile phone over to him.
—But he _________ at the place until the owner returned.
| A．must have waited | B．might have waited |
| C．would have waited | D．could have waited |
The books mainly deal with the trouble teens might have _________ right from wrong.
| A．distinguishing | B．distinguished | C．to distinguish | D．to be distinguished |
—Why don’t you buy some cakes while doing shopping yesterday afternoon? —Sorry, ____.
| A．I forget | B．I forgot | C．I have forgotten | D．I had forgotten |
We must apply what we have learned to our daily work because in no case ____ from practice.
| A．should theory separate | B．should theory be separated |
| C．theory should separate | D．theory should be separated |