1.---You could have asked your teacher for help .He is kind-hearted .---Yes,a whole day _____.A .was wasted B .had wasted C .had been wasted D.would be wasted

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1.---You could have asked your teacher for help .He is kind-hearted .---Yes,a whole day _____.
A .was wasted B .had wasted C .had been wasted D.would be wasted

这是一般过去时的现在完成时,原意是,你应该向你的老师求助.他很好心.
而第二句的主语是天,意思是如果不求助这一天就会被浪费掉,所以用被动语态.A