It is the ability to do the job ____matters not where you come from or what are. 

Mr. Lee made ______ a rule that we must come to school on time.

The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase________.

He is so young and short a man that I think he is   ________     but a professor of Northwest University.

He had a lot of friends, but none of _____ could lend him any money.