Buck must have (a)   to be able to change with his new environment.

Some people think Spitz is (a)   because he betrays his fellow dogs.

Billee will (a)   over his owners because he always wants to please.

Billee is (a)   because he is very easily managed.

Buck must become (a)   to be hardened enough to make it in his new world.

Billee likes to (a)   everyone because he wants to win them all over.

Buck’s appetite was (a)   because he wasn’t used to rationalizing food.

Spitz wants to (a)   the whole pack because he likes to rule over others.

Spitz is (a)   because he never stops fighting.

Buck needed to learn how to be (a)   so he could sneak food to eat.

Billee was (a)   because he was obedient and humble

Pike was the (a)   because he was always trying to get out of work.

Dave was (a)   after he became ill because he was not easily controlled or directed.