who is who
who's who
تعبير صحيح كما فى هذا المثال
I'm just getting to know who's who in the department
if you know who is who within a particular organization or group, you know what each person's name is and what job they do or what position they have:
والى اللقاء مع معلومة اخرى
المصدر
unique English grammar 2009
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