The teacher are ________ the exam while the students are ________ it.
  [     ]
A. preparing; preparing
B. preparing; preparing for
C. preparing; prepared for
D. preparing for; prepared for
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科目：高中英語 來源： 題型：

.The teache rfound ____ difficult to decide____ he would take with him to attend the

conference.

  A.it;whom        B.himself;who       C.this;whom      D.that;who

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