请选择ABCD2B3}*E8e,x9o5f+f It’s time ____ school.9k,U/q;v6^/i8}7{5x0^5n
A. to9k,U/q;v6^/i8}7{5x0^5n
B. for9k,U/q;v6^/i8}7{5x0^5n
C. of9k,U/q;v6^/i8}7{5x0^5n
D. at9k,U/q;v6^/i8}7{5x0^5n