Although Margaret Mead had several assistants during her long investigations of  Samoa, the bulk of the research was done by ……… alone. 

Over 1900 years ago, ………, who worked in Alexandria, Egypt, classified the stars  by their brightness.

Gradually, Microsoft became the ……… company in the software business. 

معنی ضرب المثل  " a donkey that carries a lot of books is not necessarily learned"

All I have to do is scream and my dad will be on you like flies on pie!