"That actor does not do live interviews."
Translation:Ní dhéanann an t-aisteoir sin agallaimh bheo.
Because here, beo follows (attributive adjective) a plural noun that is in the common case and which ends in a slender consonant (the gender of the noun, in this situation, does not matter). Hopefully, notes will added to this course at some point in the adjectives lessons to explain how adjectives agree with case, gender and number. You can always use the grammar tool on teanglann.ie when you're in doubt
Do actors do interviews, or do they give them? Would Ní thugann make sense here?