external auditing question - Pls. Don't guess the answer.... Only give the right answer if you know pls. Along with explanation

Question 1 - Match the auditors report - 10 Scenarios - (Purchases, Payments, Procedures) An internal control questionnaire for purchases and accounts payable. Match the question to the appropriate control objective. 7 appropriate control objectives: Environment Validity Completeness Authorization Accuracy Classification Proper Period Tell which control objective is used in each statement - 1. All receiving reports are prenumbered and accounted for 2. Are all purchase orders supported by properly approved purchase requisitions 3. Are Vendors invoices listed immediately upon receipt 4. Are vendors invoices matched against purchase orders and receiving reports before the liability is recorded 5. Is the purchasing department independent of accounting, receiving and shipping departments 6. Are the vendors invoices checked against purchase orders and receiving reports for quantities, prices and terms 7. Does the accounting procedures manual require these transactions to be recorded on the date that the goods are received? 8. Are the goods returned to vendors supported by properly approved shipping orders? 9. Is the (something) accounts adequate? 10. Are the vouchers and attached documents cancelled after being recorded