i need to solution for cases ?

1- The PCAOB’s auditing standards identify auditors’ responsibilities when addressing the possibility that fraud has materially impacted a public company’s financial statements. Which of those responsibilities did the L&H auditors fail to comply with during the 2005 and 2006 LocatePlus audits? For each item that you listed, explain how the L&H auditors failed to fulfill that responsibility.

2-What is the purpose of predecessor–successor auditor communications? Which party, the predecessor or successor auditor, has the responsibility for initiating those communications? Briefly summarize the information that a successor auditor should obtain from the predecessor auditor.

3-What are the primary responsibilities of a “concurring partner” under current U.S. auditing standards?

4-What is the nature and purpose of a “letter of representations”? Comment on the quality or strength of the audit evidence yielded by a letter of representations.