请选择ABCD+`0w/R-r:i:A-w(C(? It's important _________ with fire.-C0d-C'J.Q0N'l*j-U,z)n6@:o8v:X
A. to careful-C0d-C'J.Q0N'l*j-U,z)n6@:o8v:X
B. being carefully-C0d-C'J.Q0N'l*j-U,z)n6@:o8v:X
C. to being careful-C0d-C'J.Q0N'l*j-U,z)n6@:o8v:X
D. to be careful-C0d-C'J.Q0N'l*j-U,z)n6@:o8v:X