monopolise

"The bouncer was excluding anyone who wasn't wearing proper shoes. "

"a lamb is a young sheep;  these picture books are for young readers"

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

"The teachers at my school are very helpful and care about their students. "

"The heavy rain was leaving puddles all over the playground. "

"My uncle is a computer for our family; he's always calculating budgets and costs. "

"Everyone in the class needs to bring their textbook to the first lecture. "

"The local bus company has a monopoly on public transportation in the city. "

"My brother and I both attend the same high school. "

"The dominant party controlled the government."

"My discussion with the professor was very enlightening."

"The company monopolizes the market for affordable smartphones. "