---Will it take me at least six hours to write this essay?---Yes, six hours ________ to write a good essay．A.are not long for youB.will be too long for youC.was not long enough for youD.is not long enough for you
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D解析six hours表示时间，作主语时，谓语应用单数，可排除A项；答语中的Yes说明至少要6个小时，与B项矛盾；C项时态错误；D项正确，用一般现在时说明一般情况。