Mary is one of the brightest students who_________ from New York University.

A. is graduated                      B. have graduated    

C. has graduated                     D. are graduated

I just don't understand_______ that prevents so many Americans from being as happy as one might expect.

A. why it does       B. what it does       C. what it is            D. why it is

________ is quite natural,a beginner can't read the books written in English very quickly.

A. Which             B. As         C. What      D. It  

____________professional violinist practices for several hours a day, but____________ violinist has his own way of playing the Beethoven concert.

A. Each, every     B. Every, each     C. One, a     D. All, each

She had golden hair when she was a child, but_________ she got older and older, her hair went darker and darker.

A.while       B. when           C. after       D. as

--I'll help you whenever you need me,--I would love____________.

A. you helping                      B. that you'll help

C. you to help                       D. that you help

_______ happened that I met one of my friends yesterday.

    A. I　　　　 B. That　　　　　　 C. It　　　　　　　　 D. How

Twenty miles _________a long way to cover.

 A．were  B．a(chǎn)re   C．is   D．seem to be

The wounded_____ good care of here now.

 A．is taken B．a(chǎn)re being taken C．a(chǎn)re taking  D．is taking

One of Marx’s works _____written in English in the 1860s.

 A．was   B．were  C．would be  D．a(chǎn)re