The World War II made ______ impossible for Einstein to go on with his research.
| A．him | B．this | C．it | D．that |
---_______.
---OK. I’ll speak a little more slowly.
| A．Sorry, I don’t understand you. | B．Sorry, I can’t follow you |
| C．You can’t speak so quickly | D．Oh, you speak too fast |
______ there was no conclusive evidence, most people thought he was guilty.
| A．When | B．As far as | C．As long as | D．While |
Lin Yi isn’t what it used to be．The last decade ______ great changes in the city images．
| A．witnessed | B．was witnessed | C．has witnessed | D．had witnessed |
—Tom, you are caught late for the third time．
—Oh, __________．
| A．not at all | B．just my luck | C．never mind | D．that’s all right |
It was on July 1, 2006 ___ Qinghai-Tibet railway began operation, ____ is a symbolic project in China’s West Development Strategy．
| A．when; that | B．that; when | C．which; when | D．that; which |