[題目]

[fkifki (想要的太多需要的太少~)]

   They have prompted M &S Ltd., the property developer, _____________its
   plans for the area near the waterfront where an old grain warehouse
   collapsed last year.

   (a) withdrawn
   (b) to withdraw
   (c) withdrawing
   (d) have withdrawn

  The answer is (b) to withdraw, why can't I just choose answer (d)withdrawing
  ? Please comments~Thanks a lot.

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→ b96104018   :把插入句刪除不要看 很好懂的
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→ b96104018   :prompt...to V