Three fourths of the homework _______ today.
A．has finishedB．has been finishedC．have finishedD．have been finished
B
考查時態(tài)及主謂一致。句意：今天有四分之一的作業(yè)被完成了�？芍揪涿枋龅氖乾F(xiàn)在已完成的動作。當前面有分數(shù)修飾時，謂語動詞與被修飾詞保持一直，homework為抽象名詞不可數(shù)，故謂語動詞用單數(shù)，選B。
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