I am glad that you have managed to come.You have brought wine.We’ve got plenty.A. wouldn’

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A. wouldn’t
B. couldn’t
C. mustn’t
(答案→)D. needn’t
解析：本题考查情态动词。根据weve got plenty，所以说你没必要带来；needn’t have done sth.意为“本不必做……而实际上做了”。