lucrative

"The student's venture into the unfamiliar subject of calculus was a risky one, but she persevered. "

"To help pay her tuition, the college student began to tutor high school students in calculus and physics."

"I went to the park because the weather was nice. "

"Consider that we’ve had three major events and the year has hardly begun."

"After the party, there was a surplus of cake; everyone had eaten their fill. "

"The destruction of the condemned building will take place at noon."

"The government responded to the border conflict militarily, sending in troops and equipment instead of seeking diplomatic solutions. "

"This species of snake will only attack humans if it feels threatened."

"My uncle owns a small business selling handmade jewelry. "

"Hooligans destroy unprovoked."

"The factory is producing thousands of cars every month. "

"The lemonade stand was very profitable for the children, earning them enough money to buy a new game. "