using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Threading;namespace Step3{ class Program { delegate void CallRun(); static Thread t1 = null; static Thread t2 = null; static void run1() { for(int i = 0; i < 1000; i++) { Console.WriteLine("run1 : " + i); } } static void run2() { for (int i = 0; i < 1000; i++) { Console.Wri..