In fact , the hazy weather problem is so severe now that it has aroused __________ nationwide concern about __________ environmental pollution .
| A．/ ; / | B．/ ; the |
| C．a ; / | D．a ; the |
The truth is that the passers-by, rather than the driver, for the terrible accident.
| A．is to blame | B．is to be blamed |
| C．are to blame | D．are to be blamed |
There he was,standing still where I had left him and opening his mouth as if some-thing.
| A．to say | B．saying |
| C．to be saying | D．having said |
Making mistakes doesn't matter a lot; what really makes a difference is whether you can correct them____they get worse.
| A．as | B．after | C．when | D．before |
About China, the most frequently used word by people is "exciting", since the countryevery day.
| A．is changing | B．changes |
| C．has changed | D．was changing |
Douglas quite enjoyed himself while traveling in Huangshan, though the journey took a week
| A．specially | B．approramately |
| C．originally | D．naturally |