I wrote a letter to John for his help during my high school years.without which I the college entrance exam.A．would fail B．would have failedC．should fail D．must have failed 题目和参考答案——青夏教育精英家教网—

题目内容

I wrote a letter to John for his help during my high school years，without which I ________ the college entrance exam.

A．would fail B．would have failed

C．should fail D．must have failed

【解析】B考察虚拟语气，句义：我给John写了一封信，感谢他在高中给我的帮助，没有他的帮助，我不会通过高考的。句义可知，这是对过去情况的假设，所以主句使用情态动词+have done的形式。故B正确。

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