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

Quiz for Verb: 'To Look'

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

'Look up' - Improve

'Look up to' - Respect

'Look back' - Think about the past

'Look in on' - Visit briefly to see if everything's all right

'Look on as' - Consider, regard

'Look into' - Research, investigate

'Look for' - Try to find

'Look upon as' - Consider, regard

'Look to' - Expect, hope

'Look on' - Watch something like a crime without helping