Think of a job opening as a set of

Think of a job opening as a set of 写一篇英文作文,What do you think of your job as a teacher? a set of a common set of A set of keys The first set of textbooks__for teaching English as a foreig set和a set of的区别 是a set of keys还是a set of key? set a record of造句 a set of keys please. 求解(a set of keys) a set of是什么意思啊?