1) Carnival is a popular holiday in many countries in South America.
(2) During Tet, the Vietnamese decorate their house with many beautiful flowers.
(3) Thanksgiving is a harvest festival only held in the USA.

VI. do/does/is/are/don't/doesn't/isn't/aren't

(4) Are you students?
(5) Do they play soccer after school?
(6) Yes, they do.
(7) No, they don't.
(8) Is his father a doctor?
(9) Yes, he is.
(10) Is there a well to the left of your house?
(11) No, there isn't.
(12) Is she in the classroom?
(13) Yes, she is.
(14) Are the trees behind their house?
(15) No, they aren't.
(16) Does Lan have Literature on Monday and Tuesday?
(17) No, she doesn't.
(18) Do her parents get up at 5 o'clock?
(19) Yes, they do.
(20) Are there any stores near Minh's house?
(21) Yes, there are.
(22) Is Ba's apartment on the third floor?
(23) No, it isn't.
(24) Is it a beautiful house?
(25) Yes, it is.
(26) Are her books small?
(27) No, they aren't.