为什么Eating more fruit and vegetables ____good for our____选C选项是A.is,healthy B.are,healthyC.is,health D.are,health
问题描述：
为什么Eating more fruit and vegetables ____good for our____选C
选项是A.is,healthy B.are,healthy
C.is,health D.are,health
答
doing sth.作主语，谓语动词用单数，这里Eating more fruit and vegetables 为这种主语
health是名词“健康”；healthy是形容词“健康的”
答
在这里eating more fruit and vegetables是看作一个整体,作主语
所以用单数形式is
health是名词,健康 多吃蔬菜和水果有益健康