Johnstudiedhardbeforetheexam,andit________．Hegot4A.paidbackB.waspaidba

发布时间：2020-08-04 19:07:43

John studied hard before the exam, and it ________．He got 4A.paid backB.was paid backC.paid offD.was paid off

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C解析pay back作及物动词短语，意为“偿还”；pay off作及物动词短语，意为“付清，还清”，作不及物动词短语，意为“(计划等)取得成功”。
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