Answer:
Entry to record service revenues performed but not yet billed (nor recorded).
Dr Accounts receivable (asset, balance sheet)
Cr Service revenue (revenue, income statement)
Entry to record janitorial expense incurred but not yet paid.
Dr Janitorial expense (expenses, income statement)
Cr Janitorial expenses payable (liability, balance sheet)
Entry to record rent expense incurred but not yet paid.
Dr Rent expense (expenses, income statement)
Cr Rent expenses payable (liability, balance sheet)
Entry to record interest expense incurred but not yet paid.
Dr interest expense (expenses, income statement)
Cr Interest expenses payable (liability, balance sheet)
Entry to record expiration of prepaid rent.
Dr Rent expense (expenses, income statement)
Cr Prepaid rent (asset, balance sheet)