you()wash these clothes because they are clean.A.needn't to B.don't need to

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you()washtheseclothesbecausetheyareclean.A.needn''ttoB.don''tneedtoyou()washtheseclothesbecausetheyare

you()wash these clothes because they are clean.A.needn't to B.don't need to
you()wash these clothes because they are clean.A.needn't to B.don't need to

you()wash these clothes because they are clean.A.needn't to B.don't need to
选B
need作为实意动词,否定形式是:don't need to do
need作为情态动词,否定形式是:needn't do