The parents feel hopeless when their son has internet games for so long.A. accustomed toB.

问题补充：

The parents feel hopeless when their son has internet games for so long.

A. accustomed to

B. addicted to

C. been accustomed to

D. been addicted to

答案：

A. accustomed to

B. addicted to

C. been accustomed to

(答案→)D. been addicted to

解析：考查谓语动词及词义辨析。此句用现在完成时，排除A.B；be accustomed to习惯于不符合句意。