for m____ of the year,my parents only speak to each other

for m____ of the year,my parents only speak to each other
For m____ of the year,my parents only speak to each other.（这个是most吗）
They do not live a_____,but they still feel a bit lonely sometimes.
With a parrot at home ,they feel much b_______.
Sometimes my parents let it fly out of the cage,but it always r____ tu the cage itself.(这个是return吗)