____ is good for our health .It's my favourite sport .A.Swim B.Swimming C.Swims为什么选B请详解.

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____ is good for our health .It's my favourite sport .A.Swim B.Swimming C.Swims为什么选B请详解.

____ is good for our health .It's my favourite sport .A.Swim B.Swimming C.Swims为什么选B请详解.
____ is good for our health .It's my favourite sport .A.Swim B.Swimming C.Swims
为什么选B请详解.

____ is good for our health .It's my favourite sport .A.Swim B.Swimming C.Swims为什么选B请详解.
“游泳对身体好”
因为这里是动名词做主语,动词时不能作主语的.swim是动词,swimming是动名词形式

B

动词原形和第三人称单数不能充当句子主语
B是用动名词作主语,是可以的