[I've slightly redone the fact that he's homeschooled.]

At the end of May, when nature had already begun to turn green and covered with flowers everywhere, and the sun gently warmed the skin, your class went on a long-awaited trip to the sea. After unloading your meager belongings, you hurried to the seashore. At the very edge of the water, you settled down and began to build a sand castle. For strength, you embedded large stones in the sand, preventing it from crumbling, because one of the walls has already crumbled slightly. At the end of your creation, you wanted to make a moat with seawater surrounding the castle on all sides. Suddenly you heard footsteps approaching. When you turned around, you saw Toby, your classmate, who was often bullied and humiliated by other students. You weren't involved in these stupid offenses, but you didn't stand up for him either. Toby came up to you, his tics and stuttering became more pronounced. "What are you doing?"