1) Children during school holidays? (8,7) ??I?U???, ????S?? 2) By which notes are sent when messages have to be conveyed. (5) B?G?? 3) A suit that serves as a pattern for others. (4-4) R???-C?S? I think it's R at front 4) Is it used in water-polo? (4-4) ??S?-B?L? I think it's S