尼古丁极易使人上瘾。

Nicotine is highly ___addictive.

电子游戏的问题在于它们会让人上瘾。

The problem with video games is that they're ___addictive.

许多流媒体剧集非常让人上瘾，以至于人们会连续观看数小时。

Many streaming series are so ___addictive that people binge-watch them for hours.