57. If you want to keep h_______, you should eat less and take more exercise.

56. We can hardly i______ life without electricity.

55. O______ people usually are good at talking and making friends with others.

54. Victor is b ______ boy and he learns quickly.

53. ---- Which do you like better, science or language?

---- I like science better, e______ math, it’s my favorite subject.

52. ---- How far is it from here to the museum?

---- No far, only ten m_______ ride.

51. ---- What’s the p______ of China?

---- It’s about 1,300,000,000.

50. You can’t cross the road when the t_____ lights are red.

49. Hainan island is always a good place to swim, w_____ you go there.

48. All my friends went to my friend’s birthday party e______ me, because they didn’t invite me.