Never before ___ seen anything who can play tennis as well as Robert.
| A．had she |
| B．she had |
| C．has she |
| D．she has |
His ability is beyond question; ______ has been in doubt is ______ he is prepared to work hard.
| A．what; that | B．what; whether | C．which; whether | D．that; that |
Most people would agree that nuclear science should be developed to benefit the human beings_______ harm them.
| A．more than | B．other than | C．better than | D．rather than |
Many new means__________ to prevent the river ____________.
| A．have found, from polluting |
| B．have found, from being polluted |
| C．have been found, from being polluted |
| D．has been found, from being polluted |
I like _____ in the spring when the weather is warm and everything begins to grow.
| A．this | B．that | C．these | D．it |
Is it to hold the 2010 World Exhibition _______ makes Shanghai the focus of the world?
| A．when | B．that | C．which | D．what |