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62. ---- There is something wrong with my teeth.

----You’d better go to the hospital to have your teeth e_____________.  

61. I failed in the exam again, and the d_____________ look on my father’s face made me even more upset.

60. The black hole by Stephen Hawking is one of the greatest ______(發現) in the world.   

59. As we all know, smoking, which_____________ (影響) our health, is a bad habit.

58. The speech the officer made was so excellent that we all listened to him ______(專心)

57. The club member meet _________(定期地) to discuss important matters.

56. Lisa, I didn't __________(認出)you---you've had your hair cut!