题目内容

词形转换。
1. Remember not to take other's things without _          _ (permit).
2. Your mother looks very             _ (worry).  What's wrong with her?
3. My brother likes reading very much, so he is             _ (know).
4. There are about two _          _ (million) people in that city.
5. My sister is studying in a _          _ (medicine) college.

1. permission  
2. worried  
3. knowledgeable  
4. million  
5. medical

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