请帮我讲一下这几个词的区别,

问题描述:

请帮我讲一下这几个词的区别,
I am used to travelling by air.I am _____ to it.
a.accustomed b.habitual c.customary d.inhabited

我习惯于乘飞机出行.这题应该选A:
A adj.习惯的;通常的;独有的
v.使习惯于(accustom的过去分词)
有固定用法:
become accustomed to 习惯于;对…变得习以为常
get accustomed to 变得习惯于,习惯于
became accustomed to sth 对…变得习惯起来
B adj.习惯的;惯常的;习以为常的
一般做定语修饰名词
C adj.习惯的;通常的
n.习惯法汇编
通常做表语,e.g.It is customary to do sth.
D adj.有人居住的
v.占据(inhabit的过去分词);居住于