playing computer games Tom can’t help spending much time surfing the Internet.A. Addict

问题补充：

playing computer games, Tom can’t help spending much time surfing the Internet.

A. Addicting to

B. Addicted to

C. Having addicted to

D. To addict to

答案：

A. Addicting to

(答案→)B. Addicted to

C. Having addicted to

D. To addict to

解析：考查形容词做状语，be addicted to对…有瘾，用过去分词做状语，句意;因为对电脑有瘾，汤姆情不自禁的花很多时间上网。选B。