A-A+
Once a _______ is formed it is very difficult
问题详情
Once a _______ is formed it is very difficult to shake it off.
A．habit
B．custom
C．practice
D．usage请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：habit意为“癖好，(个人的)习惯，习性”；custom意为“习俗，惯例”；practice意为“惯例，常规”；usage也有“习俗，习惯，惯例”之意，但不太常用。
