I work in a hotel and I was asking a coworker if we are permitted to drink the
coffee in a certain location near the desk. I am trying to be formal with this
request.

I asked "Are we allowed to take that coffee?"

In romanji "Sore Koohii o teru kyoka sa retamasu ka"

1) Am I allowed to combine verbs like this? Under what circumstance can I do
this?

2) In order to be polite is it ok to add the masu to the last verb or do I
have to add it to Teru as well?

3) How would I make this sentence casual?
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2019-01-16T02:34:43.363
64924
2019-01-19T07:00:49.307
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question
relative-clauses formality casual
Combining multiple verbs