Sabina amicam in via ____________.

You need an action verb (videt or habet) and it needs to make sense. Videt means "sees" so it's the best choice for this sentence.

Sabina amicam _______.

You need a verb that takes a direct object and makes sense here. Salutat is the only verb that can take a direct object. She can't "walk" her friend or "run" her friend. But she can "greet" her friend.

Faustus filiam __________.

Amat is the only verb that can take a direct object, and it makes the most sense here.

Faustus pecuniam __________.

Faustus pecuniam debet. Debet is the correct choice because Faustus is a he, so we need the 3rd singular ending "t"

Faustus pecuniam _________.

Amittit is correct because Faustus is a he, so we need a 3rd singular verb ending (-t). Faustus loses money.

Gisco equum _______.

We need a 3rd singular verb that takes a direct object. Ducit makes the most sense here. Gisco leads the horse.

Senatores servum ________.

Senatores are a "they" so we need the 3rd plural ending (-NT)

Psittacus cibum __________.

The verb that makes the most sense for a Parrot to do to food is "consumes"