用括号里的词填空。
1. Jim is my friend. _____ is from Guilin. _____ mother is a doctor. (he, his)
2. —Whose dress is this?
    —It is _____ . It is _____ dress. _____ likes it very much. (she, her, hers).
3. —Whose  English books are these?  
    —They  are _____. They are _____ English books. _____ like English very much. (we, our, ours)  
4. Do _____ have any friends here? Yes, Cake and Jane are _____ good friends (they, their)