The potato is a plant in places it is too cold to grow some other plants.A. grown; where

问题补充：

The potato is a plant in places it is too cold to grow some other plants.

A. grown; where

B. to grow; that

C. growing; where

D. grown; that

答案：

(答案→)A. grown; where

B. to grow; that

C. growing; where

D. grown; that

解析： grown in places是过去分词短语，含有被动之意，用来修饰plant;where引导一个定语从句子。