1 Are they your notebooks?yes, it is
2 Is that her clock? No, it isn't
3 Are you a student?yes, i am
4 Are the teachers in the room? No,she isn't
5 is the father forty years old?yes, he is
6is hung a good student?no, he isn't
7 is she lan ?yes, she is
8are those chairs?no, it isn't
9are her brothers nam and duong ?yes they are
10 Are you loan? No, i am not