production

"I became conditioned to the absence of seasons in San Diego."

"To prepare for the marathon, the runner was lengthening her training runs each week. "

"It’s a good thought, but it will be a difficult thing to implement."

"The noisy environment of the school cafeteria made it difficult to concentrate on my homework. "

"The factory manufactured thousands of toy cars every day. "

"After much consideration, I have decided to stay."

"The substitution of the teacher for the week was announced on the school website. "

"The information about the project deadline resolved my uncertainty; now I know what needs to be completed. "

"The presentation about the new school rules was very clear and easy to understand. "

"The factory is manufacturing new bicycles for the upcoming spring season. "

"The teacher complicated the math problem by adding several extra steps. "

"the performance of an undertaking or a duty"