You can’t imagine what great trouble they have _____ the problem _____.
| A．to solve; being talked about | B．solving; discussing |
| C．to solve; to talk about | D．solving; being discussed |
You are so dependent that I’m afraid you can’t adjust yourself to________alone for a time.
| A．leave | B．leaving |
| C．be left | D．being left |
I received his mother’s phone call at ten.Only then did I know that he was badly________in an accident the day before yesterday.
| A．hurt | B．injured |
| C．harmed | D．wounded |
You can never be________careful，the road is icy and slippery.
| A．very | B．too |
| C．quite | D．rather |
According to the agreement，you________be fined if you fail to meet the goal.
| A．will | B．must |
| C．might | D．shall |
The first successful space walk in 2013 is an important historical________in Chinese history.
| A．event | B．matter |
| C．affair | D．incident |