persevering

"Despite the constant interruptions from his noisy siblings, David persevered with his homework until it was finally finished. "

"The loud music was a distraction during my homework. "

"The teacher determined the parameters of the history project, specifying the required length and number of sources. "

"Even though she failed her driving test twice, her perseverance paid off when she finally passed on her third attempt. "

"He steadfastly refuses to go out with her."

"The teacher is maintaining discipline in the classroom by reminding students of the rules. "

"The difficulty of the math problem made it hard for many students to solve it. "

"My friend is undertaking a new project at work, researching a new software program. "

"A big obstacle to understanding the manual was that it had been poorly translated from the Japanese."

"Even though the math problems were hard, Maria decided to persevere until she understood them. "

"The complicated instructions on the new software difficult me from completing the project on time. "

"The constant criticism from her peers caused a lot of discouragement, making her lose interest in her school project. "