... char[] {&apos ;-& apos;})); // Displays "TEST " foo = ",-TEST- ,-& quot;; Console.WriteLine(foo.TrimStart(new char[] {&apos ;-& apos;,','})); // Displays "TEST- ,-& quot;64|Chapter ... Console.WriteLine(foo.Trim(new char[] {&apos ;-& apos;})); // Displays "TEST" foo = ",-TEST- ,-& quot;; Console.WriteLine(foo.Trim(new char[] {&apos ;-& apos;,','})); // Displays ... StringBuilder sourceString = new StringBuilder("The Inserted Text is here -& gt;< ;-& quot;); sourceString.Insert (28, "Insert-This"); Console.WriteLine(sourceString);The character insertion...