2 sentences

1. 繁重的工作任务让他忙得焦头烂额。

   fán​zhòng de gōng​zuò rèn​wu ràng tā máng de jiāo​tóu​làn'é.

   Heavy workloads have left him utterly overwhelmed.

   Source: Dong Chinese Dictionary

2. 救火英雄从废墟中走出来时，已经被烧得焦头烂额。

   jiù​huǒ yīng​xióng cóng fèi​xū zhōng zǒu chū​lái shí, yǐ​jīng bèi shāo de jiāo​tóu​làn'é.

   When the firefighting hero emerged from the ruins, he was already badly burned.

   Source: Dong Chinese Dictionary