听录音,补全对话。(10分) A: Amy, do you have new teachers? B: Yes, we have _________ new teachers. A: Who _______ they? B: A ___________ teacher,an ________ teacher, and a ____________ teacher. A: __________ your Chinese teacher? B: Mr Hu. A: __________ he __________? B: He is __________ and __________. He is very funny.
把下列句子改为否定句。 (1)We are students. ________________________________________ (2)You are young and polite. ______________________________ (3)I am tall and strong. ___________________________________ (4)Sarah’s helpful at home. _______________________________