问题补充:
People in developed countries are supposed more healthy food before than what they have today.
A. to be had
B. to have
C. had
D. to have had
答案:
A. to be had
B. to have
C. had
(答案→)D. to have had
解析:考查非谓语动词。句意:发达国家的人们以前应该享有便现在更健康的食品。不定式表示具体的动作,如果动作发生在谓语动词之前,则要用完成时态的不定式,故选D。
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