Doing morning exercise?good for our health 填is还是will be

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Doing morning exercise?good for our health 填is还是will be

Doing morning exercise?good for our health 填is还是will be
Doing morning exercise?good for our health 填is还是will be

Doing morning exercise?good for our health 填is还是will be
is 表示客观事实的,一般都用现在时态.

is 动名词作主语 在陈述客观事实,一般现在时就可以