(问答题，15分)书面表达：以“How to protect our environment?”为题，写一篇作文，不少于80个单词。

本文围绕“如何保护环境”展开，分为三部分： 1. 引言：点明保护环境的重要性。 2. 主体：提出具体措施，包括不乱扔垃圾、减少塑料使用、绿色出行（步行/骑行/公交）、节约水电、植树造林。 3. 结尾：呼吁大家共同努力，改善环境。 最终作文如下： How to protect our environment? As students, we can do many things to protect the environment. First, we should not litter. Use reusable bags and avoid plastic waste. Second, walk, ride a bike, or take public transport instead of using cars to reduce air pollution. Third, save water and electricity by turning off taps and lights when not in use. Lastly, care for plants and trees. Plant more trees to improve air quality. If everyone takes action, our environment will become better. 字数：95词。