Complete the sentences with the right preposition.
A: Have you got a problem?
B:Yes, I'm Looking ..... my mobile.
A: I can hear Matt. He's in the kitchen.
B: Who's he talking ....?
A: What are you doing here?
B: I'm waiting ..... lise.
A:What are they arguing .... ?
B: Money, I think.
A: Who are you looking .... ?
B: That boy over there. I think he's Paul's brother.