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Your dog needs at least 20 minutes of vigorous exercise every day.
A:energetic
B:free
C:physical
D:regular
B:free
C:physical
D:regular
参考答案
参考解析
解析：你的狗每天至少需要20分钟有活力的运动。vigorous：精力充沛的，energetic和它意思相近，表示有活力的，精力充沛的。free：自由的；physical：体力的，身体的；regular：定期的。
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单选题_____A
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