using System.Linq;

namespace myQuestion
{
    class Program
    {
        static void Main(string[] args)
        {
            var list = new[] {"1. Facebook", "2. Twitter", "3. MySpace"};
            var result = string.Join(" or ",list.Select(s => string.Format("\"{0}\"", s.Split('.')[1].Trim())).ToArray());
            System.Console.WriteLine(result);
        }
    }  
}