题目内容
What would have happened, ___________, as far as the river bank?
A. Bob had walked farther
B. if Bob should walked farther
C. had Bob walked farther
D. if Bob walked farther
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题目内容
What would have happened, ___________, as far as the river bank?
A. Bob had walked farther
B. if Bob should walked farther
C. had Bob walked farther
D. if Bob walked farther