OFFICIAL REPORT:
"Last night, the 'Blue Diamond' was stolen from the gallery. The suspect, Mr. Miller, claims he was at home, but we found his car near the scene. He (strong past deduction) be telling the truth. Furthermore, the security guard admits he fell asleep. He (past regret/advice) stayed awake during his shift. If he hadn't slept, he (past ability/possibility) seen the intruder enter through the window.

The thief (past deduction) known the alarm code, because it didn't go off. However, we are not sure yet. The accomplice (past possibility) helped him from the outside.

Now, the owner is furious. He says the gallery (necessity) improve its security immediately. I (advice) suggest that they hire more staff. Finally, any citizen with information (obligation) contact the police station as soon as possible."