阅读下面短文，根据短文内容回答问题。 
Jim is a little boy who stays with his grandma.
He likes sweets and cakes. He always eats some food with sweets before he goes to bed. And as soon as he gets up in the morning, he can find some cakes on the table in his bedroom.
One morning, before Jim got up, his grandma took some cakes to his bedroom. She saw Jim crying in bed.
“What’s the matter, dear?” his grandma asked in a hurry.
“I have a bad toothache,” said Jim.
So his grandma had to take him to the dentist’s. Jim was looked over and the dentist pulled out the bad tooth for him at last.
Two days later Jim felt better and was at school again. Mrs. Hunt asked, “What was the matter with you those days, Jim?”
“I had a bad toothache, madam,” answered Jim.
“Oh, I’m sorry to hear that,” said Mrs. Hunt. “Is it better now?”
“I don’t know, madam. It was left with the dentist.” answered Jim.
“Sweets and cakes are bad for your teeth. In future, you should eat less sweet food and brush your teeth at least twice a day. ” said Mrs. Hunt.
Who does Jim stay with?  
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What does Jim like?  
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Did Jim have a headache one morning?  
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How long was Jim away from school? 
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What should Jim do in future?
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