[动词与动词短语(二)](限时:10分钟)                1.Drinking water, having a healthy diet and taking exercise are all positive ways to ________you when you are  考查动词短语辨析。句意:一个人越多地接触说英语的环境就越能学好这门语言。be exposed to暴露于;fill in 填充;catch on 理解;keep up 保持。根据句意可知A项正确。