After living there for one year they have there.A. accustomed to workingB. accustomed to

问题补充：

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：

A. accustomed to working

B. accustomed to work

(答案→)C. been accustomed to working

D. been accustomed to work

解析：本题考查accustom的用法。be accustomed to 习惯于。to是介词，后接doing形式。