I don’t know why you are so concerned — it’s not your problem _____ .
It was several minutes before I was ______of what was happening
In order to find _______ better job, he decided to study ______ second foreign language.
It may take a while _____ you find a hobby that truly interests yourself, so don’t give up.
European countries, ______ crisis is at hand, are providing great encouragement for parents to create more babies in the 21st century.
The web allows people to create web sites ______ they can pour out their deepest thoughts, desires and motivations to thousands or even millions of perfect strangers.