Leave me alone

Alan: Excuse me ......... but what are you doing?
intervening
interviewing
interrupting
intercepting

User: I should have thought it was pretty ..........
obvious
absolute
noticeable
accurate

Alan: Well, I only asked — there's no need to bite my ......... off!
nose
head
arm
leg

User: Sorry I didn't mean to be rude but I'm trying to ..........
deliberate
ruminate
concentrate
cogitate

Alan: I see and what is the ......... you are working on?
duty
task
work
goal

User: I'm working on those ......... English tests, which I find very interesting.
notorious
fabled
famous
infamous

Alan: Oh, yes I've heard of them. Do they ......... you with your English?
aid
support
help
comfort

User: Yes, they would do if you didn't ......... in asking questions.
continue
persist
insist
pursue

Alan: If that's how you feel, I'll leave you ..........
lonely
lonesome
alone
apart

User: What an excellent idea! Leave me in ......... and go and write another test.
piece
peacetime
peaceful
peace