floundered

"The complicated instructions confused the students about the next step in the science project. "

"The difficulty of the math problem made it hard for many students to solve it. "

"The fish flopped helplessly in the tiny remaining pool."

"The children were drawing with chalk on the pavement outside their house. "

"It was worth the attempt."

"After a glass of wine, her cheeks flustered, giving her a warm, happy glow. "

"We joined the audience just as the lights went down."

""Many students have problems understanding fractions." "

"What is your question?"

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

"During the centuries, the people of Ireland struggled constantly to assert their right to govern themselves."

"The gymnast's struggle to hold the difficult handstand was impressive. "