It’s only when you lost something __howmuch you value it.

Today, the forests have almost gone. People must ______down too many trees.

Limited natural resources should be made full use of ________ the ________ need of energy.

______ a lady like Susan Boyle, once an ordinarywoman in Scotland, would achieve overnight success at Britain’s Got TalentShow

Let’s do something at the party . What about _________ — No , I’d like _______