（2010·山东淄博高三二模） 31. —I think I should wear a dress instead of this jeans.
—It’s just a small informal party, so you don’t have to ___________.
A. warm up B. put up C. dress up D. keep up
（2010·山东淄博高三二模） 31. —I think I should wear a dress instead of this jeans.
—It’s just a small informal party, so you don’t have to ___________.
A. warm up B. put up C. dress up D. keep up
C