wanting

"My friend told me there was something in the box, but I didn't know what it was yet. "

"His creativity is unsurpassed by his fellow students in the art class."

"The student's knowledge of grammar was deficient, making it hard for her to complete the writing assignments. "

"The teacher pointed out a particular detail in the math problem that several students missed. "

"It was an experience he would not soon forget."

"The student desperately craved a good grade, working late into the night, neglecting his health. "

"The destitution of her family by her father left them struggling to survive on their own. "

"My son consistently gets good grades in math class. "

""Instead of 'See you later,' a more colloquial way to say it is 'Catch you later.'" "

"A valid driver's license is a requisite for operating a car. "

"The accountant was arrested for embezzlement of company funds. "

"the performance of an undertaking or a duty"