[lojban-beginners] Translating sentence

[Jamie McCloskey <crimbo1994@gmail.com>]

Hi all,
As an exercise, I have been translating the phrase "One of my teachers
is obsessed with eating indoors" into Lojban. What I have come up with
is this:

pa le ctuca be mi cu nelci lenu le ri citka cu nenri 

My main queries about this are:
* Is there a more accurate Lojban word for "obsessed" than "nelci"?
* Is the "ri" referring back to the right thing(i.e. one of my
teachers)?
* Am I using the correct numerical article to refer to all of my
teachers?
* Is there anything else I am doing wrong, or can do more elegantly?

Thank you,
Jamie