问题
选择题
by a greater demand of vegetables, farmers have built more green houses.
A．Driven
B．Being driven
C．To drive
D．Having driven
答案
答案：A
考查过去分词做状语，drive后farmers是被动关系，用过去分词做状语，句意是：因为被蔬菜的巨大需求驱使，农民们盖了更多的绿色大棚。选A。
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