The traffic rule says that the children ______less than 40 pounds and under the age of four must be in a child safety seat.


  1. A.
    being weighed
  2. B.
    weigh
  3. C.
    weighed
  4. D.
    weighing
D
考查非謂語動詞的用法。Weigh意為權衡,重量為……,用法為the box weighs 40 kg.因此sth 跟weigh之前是主動關系,此處weigh在句中作children的定語,weighing="which" weigh
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