單項選擇We must ________ our time to go our lessons.


  1. A.
    make use of
  2. B.
    have use of
  3. C.
    waste no
  4. D.
    lose no
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科目:高中英語 來源: 題型:

單項選擇(每題1分)

We must think twice _____ we make the final decision.

A. when               B. while           C. until          D. before

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