问题
选择题
After living there for one year, they have _______there.
A．accustomed to working
B．accustomed to work
C．been accustomed to working
D．been accustomed to work
答案
答案：C
考察固定词组。Be accustomed to sth/doing sth习惯于某事/做某事。其中的to是介词，后面要接动名词或者名词。故C正确。