--- I paid him 300 yuan for the sneakers．--- Oh, he charged you too much．You _____ them with half the money．A.could have boughtB.needn’t have boughtC.must have boughtD.wouldn’t have bought
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A解析词义辨析。could have bought本能够买；．needn’t have bought没有必要买；must have bought肯定买了；wouldn’t have bought不会买；这些零食我付了他300元。他要的太多了。你本可以用一半钱来买。所以选A。