Hi<br/><br/>Can you help?<br/><br/>1. He was mesmerised <i>by/ with</i> the scenic beauty.<br/><br/>2. He sensed the feeling of waves.<br/><br/> Is this sentence ok? If yes, can we replace feeling with 'touch'?<br/><br/>3. She <i>had slept/ was sleeping</i> when I entered.<br/><br/> Which is better?