The necklace I ________ 80 dollars is made of glass. And I have not paid ________ the money I borrowed from Tom.A.paid for; offB.spent on; backC.cost; offD.bought for; back
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D解析第一空表示“我花80美元买的那串项链”，用buy the necklace for 80 dollars,其他结构都是错误的。第二空意为：“我还没有还清从汤姆那里所借的钱”，pay back还清（借款）。