Choose the best modal verbs to complete the sentences.

Choose the correct option.

Something stinks in the house! The meat in the fridge [may|must|can't] be spoiled. We don't have anything else in the fridge.

Abraham [must|could|can't] be at home now, but I'm not sure.

She hasn't arrived yet. She [must|can't|might] have gotten stuck in the traffic jam, but who knows what really happened.

He [couldn't|mustn't|may not] hurt you. He's the kindest person I know.