It'simportantforusto________ag

发布时间：2020-07-28 10:38:43

It's important for us to________ a good state of mind while we are taking examinations．A.keep outB.keep onC.keep offD.keep up

网友回答

D解析keep out意为“不许入内，阻止”；keep on意为“继续”；keep off意为“让开，不接近”；keep up为“坚持，继续”。
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