Our water bills are higher than we can afford so we must start to __economizer__ ? (Economy)
We should make the most efforts to stop __deforestation__ (forest)
The most _disastrous__ earthquake in japanese history damaged tokyo and yokohama (disaster)
What were the reasons for the worldwide _economic.__ crisis? (Economy)
I am thankful to my teacher who always gives me lots of _encouragement__ to improve my knowledge. (Courage).

Our water bills are higher than we can afford so we must start to __economizer__ ? (Economy)
We should make the most efforts to stop __deforestation__ (forest)
The most _disastrous__ earthquake in japanese history damaged tokyo and yokohama (disaster)
What were the reasons for the worldwide _economic.__ crisis? (Economy)
I am thankful to my teacher who always gives me lots of _encouragement__ to improve my knowledge. (Courage).

It is disappointing that few people pay attention to wildlife conservation
 Tropical storms which are known as typhoons in English frequently occur in Asia
 beginners
​ economise
 deforestation
 surprisingly
 disastrous
 memorise
 predicted