题目内容

—Are train services now back to ______after last week's snowstorm?
—Yes,they are


  1. A.
    ordinary
  2. B.
    normal
  3. C.
    common
  4. D.
    average
B
此题考查形容词辨析。be back to normal=return to normal“恢复正常”,固定搭配。
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