All their hard work has !The project is finished at last.A. paid off B. paid backC. paid for D. paid

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编辑：chaxungu时间：2026-04-27 02:58:37分类：高中英语题库

【题目】All their hard work has !The project is finished at last.

A. paid off B. paid back

C. paid for D. paid out

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【答案】A

【解析】动词短语pay off还清，努力得到回报；pay back归还；pay for付钱…；pay out支付，付出；句意：他们的努力工作已经得到了回报。这个计划终于完成了。根据句意可知本句中的pay off表示努力得到回报。故A正确。