问题
All teachers ___ little of his way ___ the problem, which inspired him and gave him hope to try __ second time.
A:didn't think; of solving; a ;;
B:hadn't thought; to solve, the;
C:thought, to solve; a;
D:thought, of solving, the;
B:hadn't thought; to solve, the;
C:thought, to solve; a;
D:thought, of solving, the;
正确答案是：
