Given the sentence:<br/><br/>"We wondered who Dumbledore had trusted <span style="background-color:#ffff00;">enough</span> <span style="background-color:#00ffff;">to help him</span>, apart from you." <br/><br/>I guess, ‘enough’ is an adverb that modifies ‘had trusted.’ If then, what does the to-infinitive modify, ‘enough’ or ‘had trusted’?