David's Focus on Model Airplane

During a rainy afternoon, David decided to stay indoors and work on his latest model airplane. He had been saving his allowance for weeks to buy the special materials needed for this project. His friends, who had been playing outside, noticed David's absence and sent him messages asking why he was missing out on the fun. David replied that he was focused on his model, which required his full attention and patience. After several hours of careful assembly, he finally completed the airplane. It was a small but beautiful creation, and David felt a deep sense of accomplishment as he admired his work.