exerted

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

"Consider that we’ve had three major events and the year has hardly begun."

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

"The marathon runner had a vigorous training schedule. "

"Asphalt, composed of oil and sand, is a widely used material for roads."

"He injured himself."

"This flow chart represents the assignment of tasks in our committee."

"He is a student of life."

"I have absolutely no influence over him."

"The student was exerting all her effort to finish the difficult exam. "

"The enemy had the advantage of a more elevated position."

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