Is 'To Grind' Separable or Inseparable? - Phrasal Verb Quiz

Quiz for Verb: 'To Grind'

Is the phrasal verb 'To Grind' separable or inseparable in the following examples?

'Grind down' - Reduce or destroy someone's enthusiasm

'Grind on' - Talk endlessly

'Grind out' - Produce something with great difficulty

'Grind away' - Keep working at something

'Grind up' - Reduce to small pieces

'Grind on' - Proceed relentlessly

'Grind into' - Press or twist something hard into something else