People complain that decisions to approve or deny a permit are often ____ rather than based on fixed criteria.

In the eyes of a policeman, it's a usually very dangerous to get close to the _____criminal. He may do anything he would to escape.

The old farmer’s eyes still shone bright in the wrinkled brown face and his step as he came across the room was ________, though slow.

选出与汉语意思相符的一项。

Unlike many other boys of his age who are often addicted to PC games, he is _______ on outdoor activities in the mountains.