21. (2012·北京高一检测)Instead of sending _______ e-mail，Nancy talks with her mother on _______ mobile phone once a week.
A. the; a B. /; the C. an; / D. an; the
22. —How is she getting along with her classmates?
—Quite well. She is very _______ to other people’s feelings.
A. sharp B. sensitive C. sensible D. smart
