for a few moments, he stood still, stare at the sign and fingering the tip of his mustache. then, with a gesture of joy, he swing the trck back under his arm, stride to the checkout counter, and won the truck for tim by saying the magic words.

각각의 것을 staring, swung, strode로 바꿔야하는 것을 알겠는데,
이유를 모르겠어요ㅠㅠㅠ 좀 가르쳐주세요ㅠㅠㅠ