When my children were younger, we used to walk a graveled trail (碎石小道) around the lake near our home.
One spring day, my daughter and I (notice) litter was here and there, lying along the trail. So the next day we brought a big bag with us and started to (slow) pick up the litter along the way. There were empty (bottle), pop cans, plastic bags, pieces of broken fishing line. We stopped and picked up each one and even found old shoe in water.
Sometimes this world's problems can seem big and you want (do) what you can do to change the world. But in fact, everything you do is (use)! Every flower you plant, every animal you save, every thing you do, no matter how small, (make) a difference in the future.
By the time we had circled the lake, the bag was nearly full. We stopped before we headed home and looked the lake as the sun set. It looked more beautiful than ever.
Exhausted but happy, we put the bag in an empty waste bin and returned home.
