_____by a greater demand for vegetables,...

_____by a greater demand for vegetables, farmers have built more green houses.

A．Driven

B．Being driven

C．to drive

D．Having driven

A 【解析】试题分析：考查分词做状语用法。分词做状语，要求分词的逻辑主语必须的句子的主语。本题farmers与drive构成被动关系，故使用过去分词的形式。排除CD。B项表示正在进行。与句意不符。句意：被大量的蔬菜需求所驱赶，农民们已经建了更多的大棚。故A正确。考点：考查分词做状语用法

考点分析：

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