C#里面task的状态是RuntoComplition,如何再次启动？

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using System.Threading;

namespace ConsoleApp中task的状态
{
    class Program
    {
        private static void Method(int i)
        {
            i =i *1000;
            Thread.Sleep(i);
            Console.WriteLine($"线程是{Thread.CurrentThread.ManagedThreadId}，Method中延时了{i}秒");
        }
        static void Main(string[] args)
        {
           // Action<int> action = new Action<int>(Method);

            Task task1 = new Task(() => Method(3));
            Console.WriteLine($"task1的状态是{task1.Status.ToString()}");
            task1.Start();
            Console.WriteLine($"task1的状态是{task1.Status.ToString()}");
            Thread.Sleep(500);
            Console.WriteLine("主线程延迟500ms");
            Console.WriteLine($"task1的状态是{task1.Status.ToString()}");
            Thread.Sleep(5000);
            Console.WriteLine("主线程延迟5s");
            Console.WriteLine($"task1的状态是{task1.Status.ToString()}");
            task1.Start();  //这里会报错
            Console.ReadKey();
            
        }
    }
}

此时如何再次启动task1？？？

task完成了无法重启，重新建立一个。或者直接在task中while(true)一直运行