wherewithal

"The student's ability to concentrate in noisy environments was crucial for success in the class. "

"The teacher required the students to bring their textbooks to class every day. "

"The school's fundraising project aims to renovate the library in several stages. "

"The student accomplished the difficult math problem. "

"The wealthy have in our town often send their children to private schools. "

"The finish of the school year was a relief for all the students. "

"I need some help with my homework."

"I guess he must have weighed some 90 kilos."

"Tell me your likes and dislikes."

"The student means their lost homework, feeling very sad about the missing paper. "

"A promotion at work would be a great reward for his hard work. "

"My daily task at work is to answer emails. "