fuel

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

"It is very important to give your daughter independence in her life so she learns from experience."

"The proposed shutdown would exacerbate unemployment problems."

"I encouraged him during his race."

"The student revolution at the high school led to significant changes in the dress code. "

"The scientist carefully examined the substance to determine its chemical composition. "

"Proper nutrition provides essential nourishment for a child's healthy growth. "

"The smell of coffee stimulates me to wake up in the morning. "

"The mechanic maintains the engine while I fetch him the tools he needs. "

"The combustion of wood in the fireplace kept the room warm. "

"My concentration was high during the important math test. "

"You should put more protein in her breakfast so she will grow."