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

Quiz for Verb: 'To Trade' Is the phrasal verb 'To Trade' separable or inseparable in the following examples? 'Trade on' - Exploit, use something to your advantage Intransitive Inseparable Separable [optional] Separable [obligatory] 'Trade up' - Buy larger or more expensive items Intransitive Inseparable Separable [optional] Separable [obligatory] 'Trade upon' - Exploit, use to your advantage Intransitive Inseparable Separable [optional] Separable [obligatory] 'Trade off' - Accept something you don't really want to get something you do want Intransitive Inseparable Separable [optional] Separable [obligatory] 'Trade in' - Exchange something old as part of the price of something new Intransitive Inseparable Separable [optional] Separable [obligatory] 'Trade off' - Bargain, make a deal or compromise Intransitive Inseparable Separable [optional] Separable [obligatory] 'Trade down' - Sell something and replace it with something cheaper Intransitive Inseparable Separable [optional] Separable [obligatory]