He hated the war so much that he decided to leave the army _____. A. for long B. once in a while C. for good D. once upon a time
答案: C. for good (=permanently)永久地:He says he's leaving the country for good. for long 长久地。按本题题意,用 for long 不妥。once upon a time 从前。once in a while 偶尔。