他后来对海洛因上瘾了。

He later became ___addicted to heroin.

有一天我叔叔打电话给我，讲了一个对毒品上瘾的男孩的故事。

One day my uncle called and told me a story of a boy who was ___addicted to drugs.

她对可卡因上瘾，需要帮助。

She is ___addicted to cocaine and needs help.