Ⅱ. 单项填空(共15小题; 每小题1分, 满分15分)
21. (2012·南京高二检测) _______ to the nuclear waste will do great harm to health.
A. Exposed B. Having exposed
C. Being exposed D. After being exposed
22. —Bob, how about having a picnic this weekend?
—_______ I’ll check my schedule.
A. Sounds great. B. Good idea.
C. I’m not sure. D. Well done.
23. (2012·合肥高二检测)It was a long time before the cut on my hand _______ completely.
A. healed B. cured
C. improved D. recovered
