He hated the war so much that he decided to leave the army .A. for longB. once in a while

问题补充：

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：

A. for long

B. once in a while

(答案→)C. for good

D. once upon a time

解析： for good (=permanently)永久地:He says hes 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。