问题
选择题
What ______ had Bob walked farther, as far as the river bank?
A．would happen
B．could happen
C．would have happened
D．needn’t have happened
答案
答案：C
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What ______ had Bob walked farther, as far as the river bank?
A．would happen
B．could happen
C．would have happened
D．needn’t have happened
答案：C