____________ the situation, Charles Yerkes undertook ____________ the system in 1902 by obtaining ownership of many different lines.
| A．Seeing, improving | B．Seen , improved |
| C．To see, to improve | D．Having seen, improving |
— What made Li Ming so happy, Mr. Zhang?
— ______.
| A．Being overcome the obstacle | B．Overcoming the obstacle |
| C．Overcame the obstacle | D．He overcame the obstacle |
— You all look very excited.
— Yeah. Not only ______ to hear the news but also we will hold a celebration.
| A．we have rejoiced | B．have we rejoiced |
| C．we had rejoiced | D．had we rejoiced |
You ______ further into this matter. If so, you ______ know who did it now.
| A．must have enquired; will | B．should have enquired; would |
| C．could have enquired; will | D．shouldn’t have enquired; would |
The trick of the swindler(骗子) ______, the old man avoided being cheated.
| A．seeing through | B．having seen through |
| C．had been seen through | D．having been seen through |
Jimson found the map of great value when ______ Beijing.
| A．got around | B．to be getting around |
| C．getting around | D．to get around |