Most of the fresh water is ______ at the North and South Poles. A. boiled B. frozen C. run D. flowed

This affair does not concern you. => This affair is no ……………

We haven’t received confirmation of hotel booking yet. (BEEN)

She got so tired of waiting for him. She just got married to another man.

The world's population is ______ to be over 7 billion by 2010.

Tìm từ đồng nghĩa: Consuming too much junk food increases the risk of obesity.

In the struggle for survival, the fittest win out at the ____ of their rivals because they succeed in adapting themselves best ____ their environment.