Tortoises often hide within their shells when they are ......... and feel threatened.

Tortoises often hide within their shells when they are ......... and feel threatened. (*) happy (*) jovial (*) afraid (*) depressed


This is a companion discussion topic for the original entry at https://english.best/questions/2629,tortoises-often-hide-within-their-shells-when-they-are-___-and-feel-threatened/