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"The teacher's praise and encouragement brought a feeling of exaltation to the student who finally understood the complex math problem. "

"My teacher explained the new math concept, and I understood it perfectly. "

"My sister brought several books to the library, and that one is about dinosaurs. "

"The invention of the calculator made math homework much faster. "

"The contest was long, but the Romans finally conquered."

"He looked at her for ten full minutes before recognition dawned."

"The leaky faucet in the kitchen is a problem that needs fixing. "

"My realization that I needed to study harder came after I received a disappointing grade on my history test. "

"His exclamation of "Wow!" showed his surprise at the unexpected gift. "

"His contempt for the new teacher was obvious; he scoffed at her ideas and ignored her instructions. "

"It was a surprise to find out I owed twice as much as I thought I did."

"The teacher patiently explained the math problem, and the students were able to understand the steps involved. "