He feels isolated and lonely
I believe that the answer to this question is:
Sudden as hungry wolves the kids purloinOr lambs, which haply some unheeding swainHath left to roam at large the mountains wild
This is because a simile uses the words like or as.
I hope that this helps if you have any other questions feel free to message me!
* Nosotras vamos a asistir a clase hoy.
(asistir a is its own word and has its own 'a')
what you were doing is "ir + infinitive" lol