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71. If I ________________ alcohol last night, I could have driven my car home. (drink)
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72. Who ______________ went to the concert with you yesterday? (it)
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73. Only by balancing our diet ______________ our body functioning well. (keep)
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74. We rushed to the football court, ______________ a sign on which was written ¡°Periodic Maintenance¡±. (see)
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75. ______________ and you will be admitted into a key university. (work)
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76. When she heard her mother¡¯s steps on the stairs, she pretended _____________ her composition. (write)
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77. By the time she comes here tomorrow, we ______________. (leave)
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78. The student ____________________is looking forward to going abroad for further study. (refer)
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79. The murderer was brought in, with ______________ behind his back. (tie)
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80. It ____________________ that I had left the door unlocked. (occur)
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71. hadn¡¯t drunk 72. was it that
73. can we keep 74. only to see
75. Work hard 76. to be writing
77. will have left 78. (that/who was) referred to
79. his hands tied 80. occurred to me
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