Since we have failed many times, we should take a new approach __________ the problem.
| A．about solving | B．to solving |
| C．of solving | D．in solving |
I know the writer __________ story won a prize for the most imagination.
| A．that | B．which | C．whose | D．what |
With the help of __________ people, I can be more successful in volunteer work.
| A．serious | B．generous | C．nervous | D．dangerous |
—I’m going to see John tomorrow.
—Don’t tell him the result of his medical examination when you __________ to him.
| A．talk | B．have talked | C．will talk | D．talked |
People around the country were excited __________ the astronauts came back to the earth safely.
| A．unless | B．but | C．until | D．because |
—I’ll call Bob and tell him the good news.
—You __________ do that. He was here just now and heard it.
| A．couldn’t | B．mustn’t | C．shouldn’t | D．needn’t |