Everybody knows vegetables and fruit are g       for people．Many people eat some fruit each day．Mr and Mrs Smith like e        fruit very much and every day Mrs Smith goes to buy some fruit in the shop near her home. She can buy all k         of fruits there，such as apples，pears, oranges and bananas．In different time of the year the p        of each kind of fruit is not the same，s        high，sometimes low. Mrs Smith usually t      to buy cheap fruit．And b        are Mr Smith’s favourite fruit．Mrs Smith buys bananas for him every week．But she always chooses the cheap ones.“Eating fruit can help to keep f     ，" said Mr Smith．“It’s quite d          from snacks．Both of them can give us energy．But snacks l        cakes, chocolates and sweets are not good for our health at all," 

Everybody knows vegetables and fruit are g        for people．Many people eat some fruit each day．Mr and Mrs Smith like e         fruit very much and every day Mrs Smith goes to buy some fruit in the shop near her home. She can buy all k          of fruits there，such as apples，pears, oranges and bananas．In different time of the year the p         of each kind of fruit is not the same，s         high，sometimes low. Mrs Smith usually t       to buy cheap fruit．And b         are Mr Smith's favourite fruit．Mrs Smith buys bananas for him every week．But she always chooses the cheap ones.“Eating fruit can help to keep f      ，" said Mr Smith．“It's quite d          from snacks．Both of them can give us energy．But snacks l         cakes, chocolates and sweets are not good for our health at all," 

Fruit and vegetables are good for us. We need them __________ healthy.

A. keep B. keeping C. to keep D. keeps