He was working quietly, with all his attention _______ on the task.A.was fastenedB.fasteningC.to fas

题目简介

He was working quietly, with all his attention _______ on the task.A.was fastenedB.fasteningC.to fas

题目详情

He was working quietly, with all his attention _______ on the task.
A.was fastenedB.fasteningC.to fastenD.fastened
题型:单选题难度:偏易来源:不详

答案

D

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