用括号内所给单词的适当形式填空，每空格限填一词。
【小题1】We can see manypotatoes (potato) in the supermarket.
【小题2】My grandparents live on the ninth (nine) floor of a tall building.
【小题3】If at first you don’t succeed (success), try, try again.
【小题4】Luckily (lucky), Fred was not hurt in the car accident.
【小题5】They have invited ascientist (science) to give them a speech on space.
【小题6】Eating vegetables every day makes us healthier (healthy) than before.
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解析：
【小题1】此题考查名词的复数形式，potato的复数形式是potatoes
【小题2】此题考查序数词，在几层楼要用序数词。
【小题3】此题考查动词，don’t后面要用动词原形。
【小题4】此题考查副词，幸运地要用luckily。
【小题5】此题考查名词，科学家用scientist。
【小题6】此题考查固定结构make sb+形容词表示让某人怎样。根据语境可知要用比较级。