Equally Of Those people are correct. The past participle expresses a completed action. Since the act of beginning to Focus on the challenge is by now performed, it is right and can be used in the scenario. When seeking a whole new job, a reference from a revered pro in https://www.seoclerk.com/private-blog-networks/1025533/POWERFULL-PBN-1000-Web2-0-300-Directory-500-Wiki-500-Forum-Profile