The two sportsmen congratulated each other ____ winning the match by shaking hands．
| A．with | B．on | C．in | D．to |
A common memory they all have ______ their school days is the school uniform.
| A．on | B．of | C．to | D．with |
Every 40 minutes we will take a 20-minute break, ______ your guide will give a short talk on different aspect of the Great Wall.
| A．during that | B．and when |
| C．which | D．during which time |
Languages across the world are becoming extinct ______ endangered mammals and four times endangered birds.
| A．at twice the rate of | B．as twice fast as |
| C．twice faster as | D．twice at rate of |
As a Chinese saying goes, a mountain ______ be too high or an ocean too deep. Therefore, there is no end to our self-improvement.
| A．shall never | B．will ever | C．can never | D．must ever |
He must have sensed that I ______ him. He suddenly glanced at me and said quietly, “Why are you staring at me like that?”
| A．would look at | B．looked at |
| C．was looking at | D．am looking at |