把下面的句子改为一般疑问句并进行肯定回答和否定回答。
1 It is a lovely dog。
2 She is a lovely girl。
3 He is my father。
4 They are Lily’s cousin。
5 We are classmate。
6 I am a doctor。
7 There is a bird in the tree。
8 There are many stars in the 9 They are good friends。
10 I love my parents。
11 We have a pleasant home。12 He has many good friends。 sky。
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