Had he checked the report more carefully, he（ ）the mistake.

Had he checked the report more carefully, he（ ）the mistake.
A、will find
B、had found
C、has found
D、would have found
【正确答案】：D
【题目解析】：本题考查if虚拟语气：表示对过去事实的假设，从句用had done；主句要用would/should+have done。