using System.Text.RegularExpressions;
public static void Main()
Console.WriteLine(Regex.Replace("You can visit <a href=\"https://drive.jwpub.org/settings/help\">https://drive.jwpub.org/settings/help</a> and search specific topics.",
@"<a\s[^>]*href\s*=\s*""([^""]*)""[^>]*>(.*)<\/a>",