Those _________  may leave the classroom now.


  1. A.
    who has finished
  2. B.
    who have finished
  3. C.
    have finished
  4. D.
    whom have finished
B
句意：已經(jīng)完成的那些人現(xiàn)在可以離開教室了。這里是定語從句，先行詞是those，who在從句中作主語，不能省去，因為它代指的是復數(shù)，故選B。
考點：考查定語從句的用法。
點評：本題難度適中。定語從句是高中階段的重難點之一，需要考生有分析理解復雜的句子結構的能力，能夠正確理解句子的語境，熟練掌握關系詞的意義及句法功能。注意who作主語看先行詞的單復數(shù)，來確定從句謂語的單復數(shù)。
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