请选择ABCD7O4i9t9P ____________! It's getting dark./n+{-z)o1s*x)t/Q(t:O0N7r
A. Be careful/n+{-z)o1s*x)t/Q(t:O0N7r
B. Hurry up/n+{-z)o1s*x)t/Q(t:O0N7r
C. Don't hurry/n+{-z)o1s*x)t/Q(t:O0N7r
D. Don't worry/n+{-z)o1s*x)t/Q(t:O0N7r