1. I feel both excited and nervous to speak before such a large audience, so I spent a lot of time _______ my lecture.

A. promoting        B. releasing        C. refreshing       D. polishing

2. I can _______ Diana's thoughts from the changes in her facial expressions.

A. notice           B. scan             C. read             D. print

3. Henry hasn't missed a chance to _______ his muscles to others since being praised for his strong figure.

A. show off         B. show up          C. put off          D. put up