_______ good for our health.A．Do exercise isB．Doing exercise is C．Do exercises a

题型：不详难度：来源：

_______ good for our health.

A．Do exercise is

B．Doing exercise is

C．Do exercises are

D．Doing exercises are

答案

B

解析

试题分析：句意：做锻炼有利于我们的健康。do exercise做锻炼，exercise当锻炼时，是不可数名词，没有复数形式。be good for对……有好处；利于。此处作主语，故用动名词短语，动名词短语做主语，谓语用单数形式。故选B。