It’s necessary ________ us students _______ English aloud every morning.


  1. A.
    of; to read
  2. B.
    for; reading
  3. C.
    of; reading
  4. D.
    for; to read
D
it為形式主語，代替了不定式短語；necessary與us之間為外在聯(lián)系，應(yīng)用介詞for。
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