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It is warned that no one is permitted______the lab after 10:00 p.m


  1. A.
    enter
  2. B.
    to entering
  3. C.
    to enter
  4. D.
    entering
C
本題考查非謂語動詞。本題考查短語permit sb to do允許某人做某事。句意:據警告,晚上10點之后沒有人允許進入實驗室。
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