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The article suggests that when a person _________ under unusual stress he should be especially careful to have a well-balanced diet.?
A.isB.wereC.be D.was ?
A?
动词时态题。suggest后接宾语从句时,如果suggest意为“建议”,宾语从句的谓语动词应用虚拟语气:should+动词原形或用动词原形。但是本题suggest引导的宾语从句中,主句是he should be...,用的是should+动词原形的形式,而空格处需要填入的是when引导的时间状语从句中的动词,所以不必用虚拟语气。而且从句说的是一般规律性事情,用动词的一般现在时就行了。
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