请选择DCBA;h.t0o/b(u4C't7Y.~;u+k)V+?*E;A It’s cold here. Please keep the window __________.1k'Z1T'k.\6B*x.R
A. close1k'Z1T'k.\6B*x.R
B. closed1k'Z1T'k.\6B*x.R
C. closing1k'Z1T'k.\6B*x.R
D. closes1k'Z1T'k.\6B*x.R