beleaguered

"The castle served as the king's stronghold, protecting him from invaders. "

"He is a student of life."

"The building of the bridge will be completed in a couple of weeks."

"The house was surrounded by a tall fence. "

"The government decided to raise taxes to fund new schools. "

"I brush my teeth regularly to prevent them from turning yellow."

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

"The protesters thronged Trafalgar Square and sang anti-war songs."

"The school's playground had a sturdy metal surround to keep children safe. "

"What is your question?"

"Moisture of the earth is exhausted by evaporation."

"You should knock before you enter, unless you want to see me naked."