29In order that the Court of Justice may perform its task in accordance with the EC Treaty it is essential for national courts to explain, when the reasons do not emerge beyond any doubt from the file, why they consider that a reply to their questions is necessary to enable them to give judgment (Case 244/80 Foglia [1981] ECR 3045, paragraph 17). Thus the Court has also on various occasions stressed that it is important for the national court to state the precise reasons for which it is in doubt as to the interpretation of Community law and which led it to consider it necessary to refer questions to the Court for a preliminary ruling (see inter alia the orders in Case C-101/96 Italia Testa [1996] ECR I-3081, paragraph 6, Joined Cases C-128/97 and C-137/97 Testa and Modesti [1998] ECR I-2181, paragraph 15, and Case C-116/00 Laguillaumie [2000] ECR I-4979, paragraph 16).
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