Reported Speech (II): Questions

'What came first, the chicken or the egg?'

'Are you talking to me?'

'Could you tell me where the train station is?'

'Do you know the way?'

'Who wants to live forever?'

'Can you pass me the salt, please?'

'Where have you been?'

'Have you seen my keys?'

'Is there life on Mars?'

'Should I stay or should I go?'

'What did you say?'