earphone

"Give the motor a listen and tell me if it sounds off."

"Holding the earpiece to my ear, I could hear him speaking clearly."

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

"She handed me one headphone so I could listen too."

"My sister is very helpful, especially when it comes to organizing things. "

"My grandmother uses the telephone to talk to her friends every week. "

"They were all converts to Islam."

"The blinking lights on the modem sent signals indicating that the internet connection was working. "

"We had to sit in the dark because the electric was cut off."

"The music playing softly in the classroom helped students focus on their work. "

"He was safe and sound."

"The microphone is a transducer that changes sound waves into electrical signals so we can record voices. "