She hung up before he could even ask what the problem had been.
The party on the other end hung up without a word.
When she hung up I asked her what the matter was.
I hung up before he could ask any more questions.
He hung up when the voice asked for his name.
His next words came quickly, as though he was trying to keep her from hanging up.
She was just about to hang up when a voice said something at last.
Before he could be asked much else, the man hung up.
He received a call, and after a few minutes hung up.
He hung up the phone and sat alone in the dark.