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"The coffee concentrate was strong, so a little went a long way. "

"He is a student of life."

"If the vase falls to the floor, it might break."

"The children's excitement about the school trip was obvious in their chattering. "

"My pet cat is a mammal, and so are my dogs. "

"The constant noise from the construction site made it hard to concentrate on my homework. "

"I need to study my biology notes."

"The school's procedure for returning lost items involves filling out a form and leaving it with the office staff. "

"The reasons are various."

"The students competed in the spelling bee to win a prize. "

"The farmer swatted at the Oestrus buzzing around his cattle, trying to prevent them from laying their eggs and causing further irritation. "

"The teacher threw a challenge to the students: "Who can solve this difficult math problem?" "