________ these pictures, I couldn't help thinking of those days when I was in Beijing and ________ from the top of a thirty-storeyed building, Beijing looks more beautiful.


  1. A.
    Seeing; seen
  2. B.
    Seen; seeing
  3. C.
    Seeing; seeing
  4. D.
    Seen; seen
A
該題可從空格前后的邏輯主語確定所需語態(tài),第一空主語是I,第三空主語是Beijing,所以前都用主動形式,后者則需用被動形式。
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