Choose the correct answer.

Our teacher broke the final project _______ three separate parts.

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_______ and young adults, both male and female, benefit from physical activity.

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This type of housing is large and beautiful. Building it is expensive.

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This is a type of boat that people use for racing or leisure travel that has sails and possibly an engine.

Find the mistake.

They phoned theirs friends last night, but no one answered.

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What does a dentist take care of?

They know _______ address, but we don’t know _______.