她小心翼翼地擦掉了笔记本上的错误。

She carefully ___erased the mistake in her notebook.

下课后他把白板擦干净了。

He ___erased the whiteboard after the lesson.

请用这块橡皮把这些铅笔痕迹擦掉。

Please ___erase the pencil marks with this eraser.