opening

"Plants use photosynthesis to make their own food from sunlight, water, and air. "

"The lost keys were hidden deep in the tangled undergrowth near the park bench. "

"The scholarship offered a valuable opportunity for students to pursue higher education. "

"The poor visibility made it hard to see the road clearly during the heavy fog. "

"The teacher pointed out a particular detail in the math problem that several students missed. "

"The students in the math class were very competitive; they all worked hard to get the best grades. "

"The tour guide is conducting us through the museum. "

"The application of this cream should reduce the swelling."

"an accessible town or mountain"

"The teacher complicated the math problem by adding several extra steps. "

"My younger sister received a scholarship to attend the university. "

"a mathematical problem"