请选择ABCD5c*Z'L+M It's cold here. Please keep the window __________.(G*Z2Z(G5f'Y/G(S9]*@
A. close(G*Z2Z(G5f'Y/G(S9]*@
B. closed(G*Z2Z(G5f'Y/G(S9]*@
C. closing(G*Z2Z(G5f'Y/G(S9]*@
D. closes(G*Z2Z(G5f'Y/G(S9]*@