第二部分：英语知识运用
第一节：单项填空（共15小题；每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
17.The boy stood in front of the blackboard, with his eyes____ on the picture.
A. fix B. fixing C. fixed D. to fix
18. I promise that I will try my best and won’t_____
A. feel you down B. let you down C. have you down D. put you up
