问题描述：
The old people walk for 20 minutes every morning.（改同义句） The old people take a ___ ___ every
The old people walk for 20 minutes every morning.（改同义句）
The old people take a ___ ___ every morning.
The old people walk for 20 minutes every morning.（改同义句）
The old people take a ___ ___ every morning.
问题解答：
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