1. I failed again in the examination and only then              how much time I had wasted.

A. I realized             B. I had realized     C. did I realize       D. had I realized

2. We were all shocked to hear the news that              two Chinese engineers were shot to death in Pakistan. What was worse,      third one died in hospital soon afterwards.

A. the; a           B. the; the      C. /; a            D. /; the