题目内容
______, they would certainly come and help us.
A. Had they time B. Do they have time C. Had they have time D. Did they had time
A
解析:
这是一个if引导的条件从句的省略,如果包含had, were, should, 或could, if的虚拟条件句省略时,就要将这些词放在主语前面作部分倒装。

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