Serially numbered $\_\_\_\_\_\_\_\_\_\_\_\_$ should be prepared and sent to vendors when goods are ordered. not attempted

$2.$ Inventories stored in public warehouses should be $\_\_\_\_\_\_\_\_\_\_$ with the custodians. not attempted

$3.$ The auditors' review of purchase invoices is generally performed in connection with tests of the $\_\_\_\_\_\_\_\_\_\_$ of the inventories. not attempted

$4.$ The details of the auditors' $\_\_\_\_\_\_\_\_\_\_$ made during the observation of the physical inventory should be recorded in their working papers to later check the accuracy of the final inventory listing. not attempted

$5.$ Examining receiving documents for several days before and after year$-$end is designed to test the proper cutoff of $\_\_\_\_\_\_\_\_\_\_$ transactions.