What would have happened as far as the river bank ?
A. Bob had walked farther
B. if Bob should walk farther
C. had Bob walked farther
D. if Bob walked farther
网友回答
A. Bob had walked farther
B. if Bob should walk farther
(答案→)C. had Bob walked farther
D. if Bob walked farther
解析：考查虚拟语气。根据语境为过去事实相反的虚拟语气，故用had Bob walked farther，等于if Bob had walked farther，选C。