harry1999 #1 - I can understand it's a transitive phrasal verb with the direct object "for the exam". I don't see that "for the exam" can be an object here. I would say this is instransitive "mug up" with adverbial "for the exam".
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harry1999#1 - I can understand it's a transitive phrasal verb with the direct object "for the exam".I don't see that "for the exam" can be an object here. I would say this is instransitive "mug up" with adverbial "for the exam". Alternatively, perhaps you could consider "mug up for" as transitive, though I wonder if it is quite strong enough as a unit.
harry19992. She had better mug up before she interviews him. ...Nobody said it was.
#2 - I cannot understand how it is transitive.