When it comes to this particular topic, the first person that springs to mind is my next- door neighbor - Mr Tam, a considerate and thoughtful old man. We have been friends for several years since the day he moved into my neighborhood. Despite the obviously huge age gap, we got on like the house on fire at the very first time we met, and I admire him so much for many valuable virtues of his.

To most people, the idea of senior men often rotates around how old-fashioned and conservative they can be, or how forgetful they are. Mr Tam, to me, is the embodiment of the exact opposite. My deepest impression on him, which is also the reason why we clicked at the very first time we met, is that he is very good with tech gadgets. Unlike many same-age counterparts who are mostly dismissive of anything modern, Mr Tam is not technology-illiterate at all. He often posts adorable pictures of his grandchildren on Facebook, and I believe that he takes great pleasures in replying to every compliment about how radiant and effulgent they look.

I also adore this man for his sentimentality. In his younger years, Mr Tam used to be soldier who fought for the country in the Vietnam War. He is sometimes reminiscent of the days when he was in the army. I remember there was one time when he got a little bit emotional about his friends who laid down their lives in the battle. Whenever we talk, he always reminds me and my friends to keep moving forward in life, so that the sacrifices of his friends will not go to waste.

To me, Mr Tam is both a friend and an inspiration. I admire him for his wisdom, his heart and many of his life advice. He is truly a friend that I never thought I would be so lucky to have.

I would like to tell you about an environmentally friendly person that I know very well and that person is my mother. She is a literature teacher in Secondary School in Bien Hoa and she's 50 years old now. My mom has a simple but very practical way protecting the environment.

She says no to plastic bags so that's why she always brings her own cloth bag whenever she does the grocery shopping. Several years ago my grandmother usually used a big plastic bag when going to the market because she said it was convenient but then my mom told her that it would take hundreds of years for plastic bags to decompose. Moreover the chemicals from plastic bags contaminate water sources or soil, which may leads to adverse effects on our health. As a result, my grandmother doesn't use plastic bags anymore.

Mom has also told me and my family members to cut down on using products down on using products made of plastic such as straws or plastic bottles. She is ready to throw away all plastic products in my house and replace them with those made with glass or ceramics. Although it may be more costly, my mom says that we must do that to protect the environment

To sum up, she has made great attempts to contribute to a cleaner environment and raise my family members' and neighbors' awareness about the importance of "living green". If more people behave like her, I believe that we can mitigate environment issues.