he was so tired___a day's work that he left all the food___for him ___

c

be tired with sth 某事劳累

left 后面那句all the food prepared for him作为插入语 prepared 分词修饰food省BE动词

left sth done 留下什么事没做的意,归于某种状态

left the food untouched 一点食物都没吃

a

A吧
be tired of 厌倦
leave sth for sb
食物是被准备好的所以用prepared
第三个空……不会

c
he was so tired with a day's work that he left all the food prepared for him untouched.

一天的工作让他累坏了，给他准备的食物他一口没动。