Earth Day,     1    (mark) on 22 April, is an annual event aiming to raise public awareness about environmental protection. First celebrated     2     1970, the Day now includes events in more than 190 countries and regions(地区). No matter what you like to do, there is a way to get involved in various     3    (activity) on Earth Day. You can plant a tree, make a meal with locally grown vegetables, or save power—the possibilities are endless.

On the first day of my first grade, I stood by the door with butterflies in my stomach. I     1    (voice) my biggest concern to my mother. “How will I make friends?” She handed me advice. “Be yourself.” For the past 20 years, I have lived by these words. Soon I will graduate and become part of the real world. Nervously     2    (face) challenges, I know I will whisper to     3    (I) the two simple words “Be yourself”.