She took it for granted that she would get the job after the interview.

took 是动词 take 的过去式，意思是"拿、采取"。 it 是代词，指代前文提到的"得到工作"这件事。 for 在这里表示"作为、当作"的意思。 granted 是动词 grant 的过去分词，grant 意思是"给予、承认"。 take it for granted 是一个固定短语，意思是"认为...是理所当然的"，指不经过思考就认为某事一定会发生或存在。