题目内容

-Can you help me with my physics lesson this afternoon?

-I'm sorry, ________ I've something important to do.


  1. A.
    yet
  2. B.
    but
  3. C.
    however
  4. D.
    for
B
别人邀你帮忙做某事,拒绝时语气要委婉,常用“I'm sorry, but….”句型,but后应申明拒绝的理由,取得对方谅解.
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