Answer: TOILED

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Worked hard we know 5 Answers
Labored we know 3 Answers
Worked we know 5 Answers
Worked like a dog we know 3 Answers
Slogged away we know 1 Answer
Worked really, really hard we know 1 Answer
Slaved away we know 1 Answer
Plugged away we know 2 Answers
Worked arduously we know 1 Answer
Worked a 12-hour shift, e.g. we know 1 Answer
Slaved we know 1 Answer
Dug ditches, e.g. we know 1 Answer
Applied elbow grease we know 1 Answer

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