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【Three-fourthsofthehomework[]today.A;hasfinishedB;hasbeenfinishedC;havefinishedD;havebeenfinished必须有理由】
题目内容：
Three-fourths of the homework [ ]today.
A;has finished
B;has been finished
C;have finished
D;have been finished
必须有理由优质解答
选B,homework 是个单量,用单数动词,has .然后这是一个被动语态,所以用has been.
由此答案选B
A;has finished
B;has been finished
C;have finished
D;have been finished
必须有理由
优质解答
由此答案选B
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