any TV report on places where there is a war, and you will see soldiers wearing blue berets.
_____ his knowledge of the mountainous country, John Smith was appointed as our guide.
Political parties often differ in their views on various _____ concerning their own countries.
Evidence obtained from observation and experiment is often used to _____ a scientific theory.
Jack is good, kind, hard-working and intelligent. _____, I can't speak too highly of him.
You can’t guess what difficulty I had_____ your home.