lidocaine

"My sister brought several books to the library, and that one is about dinosaurs. "

"The dentist found a small cavity in my tooth. "

"The nurse injected a painkilling drug into the veins of my forearm."

"The dentist used an anesthetic to numb the patient's tooth before the filling. "

"My sister goes to the dentist every six months for a checkup and cleaning. "

"They had porridge for breakfast, and also toast."

"The local is helping organize the school fundraiser. "

"The student used a calculator to solve the math problem. "

"The chemistry student synthesized acetamide in the lab by reacting acetic acid with ammonia. "

"Aspirin is a drug that reduces pain, acts against inflammation and lowers body temperature."

"Before dinner, I finished my homework. "

"The heavy backpack filled all the available space in the school locker. "