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Polydactyl cats can have seven toes on each feet, a fact that makes me wonder whether the extra digits make it easier for them to scratch things. No error

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Jordan and Marvin’s mother has decided that they will become a lawyer when they grow up, but they seem more artistically inclined. No error

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All three of the pumpkins that Gerald entered into the contest became a top-ten winner; needless to say, he was thrilled. No error

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Bob and Frank won the prize for first and second place in the elementary school baking contest. No error

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The professor decided that all of his students should become a fan of his favorite violinist, so he lent them CDs so that they could listen to the music. No error

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All of my classmates wanted to become a singer when they grew up, except for me. No error

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Lewis and Clark, the now legendary explorers of the Louisiana Purchase, were chosen for their scientific knowledge and skills as a frontiersman. No error

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Dedication, hard work, and attention to detail are all an important factor in determining success. No error

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Reading, writing, and arithmetic are essential skill to learn in elementary school. No error

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Frida Kahlo and her husband Diego Rivera were both well-known and talented Mexican painter. No error