Tom is looking for some books. Tom isn′t looking for any books. Is Tom looking for any books? Yes ,he is . No, he isn′t. I am a teacher. I am not a teacher. Are you a teacher? Yes, I am. No, I am not. 将下面句子变为否定句,一般疑问句并作出肯定否定两种回答。 1 This is my bag. 2 They are twins. 3 Tom and Jerry are good friends. 4 The flower is very beautiful . 5 The desk is broken. 6 He is having some dumplings. 7 They are flying kites.