题目内容

I think _____ of the materials I listen to at the beginning of the exam _____easy.
A.two thirds, isB.second three, are
C.two thirds, areD.two third, are
C
基数词十序数词的适当形式.作主语时,根据后接的名词的单复数,本题后接的可数名词复数形式,故选C
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