incapable

"The teacher was very receptive to questions from her students. "

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

"The teacher struggled to explain the concept to the student, who was an imbecile and seemed to grasp only the simplest ideas. "

"He acted like a complete simpleton, trying to pay for his groceries with Monopoly money. "

"The inefficient in our study group wasted valuable time arguing instead of focusing on the assignment. "

"The simplest way to solve the math problem was to use the formula directly. "

"The susceptible in our class are getting the flu. "

"During the centuries, the people of Ireland struggled constantly to assert their right to govern themselves."

"This flow chart represents the assignment of tasks in our committee."

"The complete survey was handed in to the teacher. "

"He remembered with pleasure his home and family."

"He mentally reviewed the math problems before answering them aloud. "