sp; C) while D) for
78. A) to B) by C) in D) with
79. A) with B) into C) to D) along
80. A) adult\'s B) teacher\'s C) scientist\'s D) student\'s
81. A) exist B) occur C) survive D) maintain
82. A) private B) individual C) personal D) own
83. A) in B) with C) on D) for
84. A) general B) natural C) similar &nb
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