24. Only when the meeting began _______ that he had left his papers at his office.

24. Only when the meeting began _______ that he had left his papers at his office.

       A. will he realize           B. he did realize     C. did he realize            D. should he realize

 Only when the meeting began ______ that he had left his papers at his office.

A. would he realize   B. he did realize   C. did he realize   D. he would realize

24. Only when the meeting began _______ that he had left his papers at his office.

Only when the meeting began ________ that he had left his papers at his office．

1. A.
   would he realize
2. B.
   he did realize
3. C.
   did he realize
4. D.
   he would realize