stumbles

"The scientists repeated the experiment in order to confirm the result."

"He is a student of life."

"The little brother mischievously hid the remote control. "

"What is your question?"

"The substantial of my grandmother's advice helped me make a good decision. "

"I am a frequent visitor to that city."

"He stumbled over a rock."

"The complicated instructions for the new software program confused many of the employees. "

"My daughter walked along the sidewalk to school this morning. "

"The carpenter is sticking the pine boards today to make the cabinet doors. "

"The students' high scores on the math test were confounded by the fact that they all had access to the answers beforehand. "

"He clumsily spilled his milk while reaching for the cereal box. "