I NEED HELP PLEASE

1) What does a third-party user of financial statements have to prove under common law in a suit against an auditor for the auditors negligence? Illustrate each item with an example.

2) Assume that a CPA has just received a new audit client. The client will be the firms largest audit client, and the firm will have to hire one new staff member to staff the engagement. The fees will represent 25% of the firm revenues. Apply the conceptual framework for members in public practice to this situation.