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题库 / Prep2007E1-SC-3
Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil, their descendants, popularly known as killer bees, had migrated as far north as southern Texas.
Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil,
In less than 35 years since releasing African honeybees outside Sao Paulo, Brazil,
In less than the 35 years since African honeybees had been released outside Sao Paulo, Brazil,
It took less than 35 years from the release of African honeybees outside Sao Paulo, Brazil, when
It took less than the 35 years after the time that African honeybees were released outside Sao Paulo, Brazil, and then
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首先，D是明显错的，句意为王啊！！！修饰的主语都变了啊！！时态的选择除了句子本身，也需要关注上下文的time marker。本文的time marker 不是after the release of African honeybees outside Sao Paulo，强调的是“less than 35 years”。
sequence of events 决定了动词的时态。
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