1.　　 agree to do sth.　 同意干某事

50. They play their CDs loudly. (就画线部分提问)

　　　　　　　　　　　　 　they play their CDs?

49. I think the white ones are cheaper than the black ones. (改为一般疑问句)

　　　　　　　　　　　　 　think the white ones are cheaper than the black ones?

48. We prefer basketball to volleyball.( 同上)

We like basketball 　　　　　　　　　　　　　volleyball.

47. The Tab Bat is 83 yuan and the Bon Bon is 75 yuan. (同上)

The Tab Bat is 　　　　　　　　　　　　　than the Bon Bon.

46. Football is more exciting than volleyball. (改为同义句)

Volleyball isn’t 　　　　　　　exciting 　　　　　　　football.

45. I like table tennis best.

A. My favorite sport is table tennis.　　　　　

B. I don’t like table tennis.

C. I don’t play table tennis.

44. Zhang Hai always gets the first in the 100-metre race.

A. Zhang Hua runs the most slowly.　　　　

B. Zhang Hua doesn’t run fast.　　　

C. Zhang Hua runs fastest.

43. Gu Ming is 14 years old and Li Jie is 14 years old,too.

A. Li Jie is younger than Gu ming.　　　　

B. Li Jie is the same age as Gu Ming.　

C. Gu ming is older than Li Jie.

42. The school computers are fast. But mine is much faster.

A. My computer is faster than the school ones.

B. The school computers are faster than mine.

C. My computer is as fast as the school ones.