题目内容：

Peter start to look for a job after graduation,but he found it difficult to find____without
working
A it B one C this Dthat选B请解释语法

优质解答

B 是正确的.
句子本意是：but he found it difficult to find【a job 】without working 但是前面已经出现过a job ,为了避免重复,用one来代替.
英语中常用one 代替上文出现的单数可数名词,用ones 代替上文出现的复数名词.
例如：The big boxes are heavier than the small ones.(ones 指boxes )