refractory

"The teacher is requiring students to submit their essays by Friday. "

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

"The loud music from the construction site was disrupting the students' concentration during the exam. "

"The chef specialized his menu, separating the vegetarian dishes from the meat dishes. "

"The strong bridge cables were designed to withstand the force of a major earthquake. "

"She is registering her daughter for kindergarten today. "

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

"My grandmother takes several medications for her high blood pressure. "

"The doctor prescribed antibiotics to help fight the bacterial infection in my throat. "

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

"My little brother was obstinate about wanting a new video game, refusing to consider any other activity. "

"The infection spread quickly through the classroom after one student got sick. "