The infinitive here is 'to leave', and it is used as an 'adverb', meaning 'with the intention to leave', since it modifies a verb, it has to be an adverb.
Only one business. That’s what a monopoly is is one business is in power. Also mono means one.
<span>flat character
hope that helps</span>
maybe you've been invited to a party of a distant friend. while there, you meet someone who you'd never though you could be friends with. someone wayyy too different than you? but you two hit it off and they tell a really funny joke, hence where you'd use the line "i've never laughed so hard in my life."
hopefully this helps or gives you some sort of idea!