He would  once in a while  lose his temper when he found himself involved in an argument.

A. rarely

B. often

C. occasionally

D. seldom

【答案解析】本题正确选项C。【译文】当他陷入争吵的时候，偶尔会发脾气。【解析】在四个备选项中，rarely“很少，罕见”；often“经常”；occasionally“偶尔，间或”；seldom“很少”。这里需要选择和题中划线词once in a while“偶尔，有时”相近的词，因此，依据题意本题最符合题意的选项为C。