Fill in the necessary prepositions . The work of this claas have been falling ____ recently. I came ____ these old photos

The work of this class have been falling behind recently. I came across these old photos recently. When can you give back the money that you owe? Don\' t drink the milk, it\'s gone off. Do go on, I am listening. Would you like some tea before you turn in? Well, it\'s about time to turn back. She asked them why they hadn\'t turned the lights on. Jim and Mary fall apart every few weeks, but their quarrels never last. This cup just fell apart in my hands. She ran into Sue on her way home. I\'m run out of papper, please, buy me some. You should give up talking the lesson otherwise you will have problems with your teacher. This shirt goes really well with your trousers.