tā / jīn / tiān / guǐ / mō / nǎo / ké / lián / zuì / jiǎn / dān / de / tí / mù / dōu / dá / cuò / le

他今天鬼摸脑壳，连最简单的题目都答错了。

He was completely muddled today and got even the simplest questions wrong.