14、    most wolves rely on their groups for food ,shelter and companionship ,they have developed a system of signals to keep the groups together.

A．Because    B．Although   C．Unless      D．Where

14、A

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科目：高中英語 來源： 題型：單選題

________ most wolves rely on their groups for food, shelter and companionship, they have developed a system of signals to keep the groups together.


  1. A.
    Because
  2. B.
    Although
  3. C.
    Unless
  4. D.
    Where

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科目：高中英語 來源： 題型：

    most wolves rely on their groups for food ,shelter and companionship ,they have developed a system of signals to keep the groups together.

A．Because    B．Although   C．Unless      D．Where

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