"Ordinarily, a motion to continue is addressed to the discretion of the trial court, and absent a gross abuse of that discretion, the trial court's ruling is not subject to review. State v. Taylor, 354 N.C. 28, 33, 550 S.E.2d 141, 146 (2001), cert. denied, 535 U.S. 934, 152 L. Ed. 2d 221 (2002). "When a motion to continue raises a constitutional issue, the trial court's ruling is fully reviewable upon appeal. Id.