问题补充：
The center, dealing with children to computer games, has achieved great success.
A. addict
B. addicting
C. to addict
D. addicted
答案：
A. addict
B. addicting
C. to addict
(答案→)D. addicted
解析：考查过去分词做定语：句意：治疗电脑游戏成瘾的儿童中心取得很大成功。这里填的是第一次，修饰children，be addicted to是“对…上瘾”，用过去分词addicted to….作定语，选D。
