Hi Hwang Seong Eun, 

Your approach to disaster preparedness is thorough and insightful. Understanding the potential risks, learning from past experiences, and taking proactive measures to prevent disasters are essential steps. Your examples of building resilient structures and having fire extinguishers readily available demonstrate a practical approach to minimizing the impact of disasters. It's been great studying with you, and I'm impressed by your dedication to learning. I look forward to the opportunity to study with you again in the future. Keep up the excellent work!

~Teacher Cathy 

First, we need to expect which disaster is likely to happen.  

>>CORRECT 

OR>>First, we need to anticipate which disaster is likely to occur. 

We can learn from past experiences(earthquake, wars, etc).  

>>We can learn from past experiences, such as earthquakes and wars. 

And then we need to think about how to prevent them and what effects would be if they happen.  

>>CORRECT 

OR>>And then we need to consider how to prevent them and what the effects would be if they occur. 

It's the best choice to prevent them not to occur.  

>>CORRECT 

OR>>It's the best choice to prevent them not to occur.  

But if we can't, we should minimize the effect of disaster.  

>>CORRECT 

OR>>If we cannot prevent disasters, we should aim to minimize their impact. 

For example, we can build structures that can minimize the impact of earthquake. 

>>For example, we can build structures that can minimize the impact of earthquakes.  

Or putting many fire extinguishers can reduce damage. 

>>CORRECT 

OR>>Placing multiple fire extinguishers can help reduce damage.