wiper

"He polished up the chrome until it gleamed."

"To get a good grade on the test, you need to answer the questions properly. "

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

"My uncle is a computer for our family; he's always calculating budgets and costs. "

"The volunteer helped organize the school's annual fundraising bake sale. "

"The students designed posters for the school fair. "

"I checked the list again and everything is done."

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

"The bicycle's gears are a complex mechanism that converts the rider's pedaling motion into forward movement. "

"The bakery's machinery worked tirelessly, producing dozens of loaves of bread each morning. "

"It is generally known that the Earth is round."

"Oh no! A vandal has just smashed our windscreen! Susan, can you go and call the insurance company?"