The British political system (evolution) ______ over several centuries.has evolv

游客2024-07-06  9

问题 The British political system (evolution) ______ over several centuries.

选项

答案 has evolved

解析 本句缺少谓语动词,所以evolution应用动词形式evolve,意为“进化,发展”,而且后面是延续性时间状语,所以用现在完成时,表示此动作还可能继续下去。
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