题目内容

It was not until then that I came to know that knowledge ________ only from practice.


  1. A.
    had come
  2. B.
    has come
  3. C.
    came
  4. D.
    comes
D
本题考查从句中谓语动词时态的用法。
掌握从句中谓语动词用现在时的用法。
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