Three-fourths of the homework today.A. has finishedB. has been finishedC. have finishedD.

问题补充：

Three-fourths of the homework today.

A. has finished

B. has been finished

C. have finished

D. have been finished

答案：

A. has finished

(答案→)B. has been finished

C. have finished

D. have been finished

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