explained

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

"The child's disruptive behavior in class was a concern for the teacher. "

"The customs officer checked the ship's manifest to verify the cargo being imported. "

"My teacher explained the new math concept, and I understood it perfectly. "

"The ice cream was disappearing quickly because everyone loved it. "

"Two men were seated in a well-lighted compartment of a third-class railway carriage."

"The magician was revealing his trick by showing how the disappearing box worked. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"She crumpled the paper in her hand after realizing she had made a mistake. "

"The teacher's instructions were intelligible, and the students easily followed along. "

"The teacher's example illustrated how to solve the math problem. "

"The obscurity of the room made it hard to see the small, hidden objects on the desk. "