behaving

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

"The school board will regulate the dress code for students next year. "

"After school, my family went to a restaurant for dinner. "

"The child left a tiny footprint in the wet sand near the ocean. "

"The adverbial "happily" shows how the student reacted to the good grade. "

"Go easy on him: he is but a child."

"The student completed her homework responsibly, carefully checking each answer. "

"to reduce weight, speed, heat, expenses, price, personnel etc."

"The teacher embarrassed the student by publicly calling out a wrong answer during the quiz. "

"The specific of her success was her dedication to studying. "

"You should do your homework yourself. "

"The teacher praised Sarah's good behaviour in class. "