1.This is Nga.______ is my classmate. 2- This’s my father and that’s my mother . ______ are doctors. 3- My cat is here. ____________is very nice. 4- These are my books . _________ are on the table. 5- That’s my father. _____________ is forty one years old. 6- Thu and Lan are students. _________ are in class 6D. 7- How old are ________ ? - I’m twelve. 8- I’m Hoa and this is Tuan. __________ are students. 9- What are these? - ________ are desks. 10- Good morning,children. How are you ? - ___________ are fine,thanks. 11- This is my teacher. _________ is Hoa. 12- Are you and Nam students? - Yes, __________are