The teacher asked an easy question, but not a proper answer ________．


  1. A.
    came up
  2. B.
    keep up
  3. C.
    catch up
  4. D.
    was come up
A
come up意為“被提出”，不能用被動語態(tài)。
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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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