将下面句子改成一般疑问句,并做肯定回答
1.it is a lovely dog.2.she is a lovelygirl 3.he is my father 4.they are lily,s cousins 5,we are classmates 6.i am adoctor 7.there is a bird in the tree 8.there are many stars in the tree 9.they are good friends 10.i am a teacher 11.these are my backpack 12.those are many books 13.this is an eraser 14.that is my computer game 15.it is a big map 16you are a singer