Complete the following sentence

Complete the following sentence with a (compound) word derived from the one(s) given in bracket.

Parents will know if their children are ill or （ ） from their behaviors. (comfortable)

本题考查常见形容词的派生词。

由ill和or可知，空缺处应填形容词，分析句意，前部分应为“生病或不舒服”，故应填comfortable的反义词uncomfortable意为“不舒服的”。

句意：父母通过孩子的表现就会知道孩子是不是生病了或者不舒服。