19. Lan (be).......in the living room, but her sisters (be)..... in the yard. 20. -Hoa, (be)...... you in grade 9?-Yes, Thao and (be)...... in class 9B. 21.My father (be)... fine, but my mother. (be)... not. 22. Those new books (be)....... mine, and this small school bag (be)........ yours twenty six boys in my class. 23. There (be) 24 Thu's bags small? No, they( not be) 25.1 (be) in grade 6 and my sister (be) in grade 3. 26.Miss White's students (not be ) tall. They( be) short. 27.Lan's brother (be) 28. How old Hoa (be) ? She (be) 12 years old. a doctor. 29.Mai and Hoa (be) in grade 6. They (be) friends of mine. 30. My brother (be) 31.My name (be) a student. Lan. I (be) in a grade 6. Viết cho Mộc Nhii