actuates

"You must do your homework before you can watch television."

"He is a student of life."

"If we animate the model, we can see the complexity of the action."

"The teacher explained the new math concept quickly. "

"Do you need a gift for that special someone?"

"The dog's happy approaches to the door always made the children smile after school. "

"if I make a promise, I always stick to it;  he broke his promise"

"I never learned to drive a stick. I can only drive an automatic."

"The complete survey was handed in to the teacher. "

"The weekly staff meeting was meant to motivate employees."

"The new school program activated students' interest in science. "

"The lightning caused thunder."