3. Have you interviewed the house owners yet?
 they / interview / last night
 4. Have you questioned the neighbours yet?
 they / question / this morning
 5. Have you arrested any suspects yet?
 two men / arrest / yesterday evening
 6. Have you interrogated the suspects yet?
 they / interrogate / last night
 7. Have you recovered the stolen goods yet?
 they / recover / this morning
 8. Have you written your report yet?
 it / complete / an hour ago