Tina liked her new first-floor apartment, but she couldn't stand the ___1___ upstairs tenants, who partied incessantly through the night, keeping everyone awake. After enduring several days of nonstop music and stomping, Tina visited the noisy neighbor and spoke with a[n] ___2___ she usually reserved for dealing with the most difficult people.

1. Noisy.         2. tender voice

Explanation:

The people in  question are difficult people for her and she is gentle and reserved. Tina did not want  to cause trouble for herself by using harse word on her upstairs tenants and not only that coupled with the fact that she is reserved. if Tina was not reserved, she would not have endure for several days before her final decision for visite them.

well to answer ur question to be completly honest