21It is established case-law that, in the procedure laid down by Article 234 EC providing for cooperation between national courts and the Court of Justice, it is for the latter to provide the referring court with an answer which will be of use to it and enable it to determine the case before it (see Case C-334/95 Krüger [1997] ECR I-4517, paragraph 22, and Case C-88/99 Roquette Frères [2000] ECR I-10465, paragraph 18). To that end the Court of Justice may have to reformulate the question referred to it (see Krüger, paragraph 23, and Case C-62/00 Marks & Spencer [2002] ECR I-6325, paragraph 32).
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