20. －Have you been wasting time on computer games again?

　 　－　　　　 ．I’ve been studying a lot and I need a break．

　 A．No way　　　 B．Not really　　 　C．Please don’t say so　　 D．I don’t agree

19. _______ is known to us all is that the 2008 Olympic Games held in Beijing is a success.

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

18. I shall never forget those years when I lived in the country with the farmers, _______ has a great effect on my life.

A. that　 　　　　　B. which　　 　　　　C. whom　　 　　　D. who

17. After the new equipment was introduced, they produced ________ machines this year as the year before.

　 A. as twice many　 　　　　　　　　　B. as many twice　

　 C. twice as many　 　　　　　　　　　D. twice many as

16.The supermarket provides　　　 cheap food　　　 all its customers can afford it．

A．such；that　　　 B．so；as　　 　　 C．so；that 　　　 D．such：as