单项选择题

Which of the following may count as deliberate workout

A．Housework.
B．Lawn-mowing.
C．Table tennis.
D．Out-of-the-gym activities.
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单项选择题
It seems that physical activities inevitably ______, which improves fitness.
A．burn calories
B．build muscles
C．relieve back pains
D．reduce high blood pressure
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