—Don't you know that a proper amount of exercise a day will ________ to a person's health?

—No wonder so many senior citizens do exercise in the square.

A．construct B．conclude

C．distribute D．contribute

 

D

【解析】D　[contribute to...意為“有益于；為……作貢獻(xiàn)；導(dǎo)致”。]

 

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