Doctor Brown says that _______ what forceful arguments against cigarette harm there are, many people insist on smoking.
| A．though | B．however | C．no matter | D．even if |
----You haven’t done it well.
----But I tried my best and did it ______ the way ______ I thought was the best.
| A．in, which | B．by, in which |
| C．by, in that | D．in, what |
Go back home now, Mary. Your parents ______ your safety.
| A．are concerned about | B．are concerned with |
| C．are concerned on | D．concern of |
Must I wait till you come back? No, you ______.
| A．mustn't | B．needn't |
| C．can't | D．won't |
It is in the school ______ he studied ten years ago ______ he gave a wonderful speech.
| A．that; where | B．where; that |
| C．where; where | D．that; that |
I don't think she ____what happens to her children.
| A．cares to | B．cares about |
| C．cares for | D．takes care of |