1. Mai brushes her teeth twice a day.
PĐ: Mai doesn't brush her teeth twice a day.
NV: Does Mai brush her teeth twice a day?
2. Ba and Lan sometimes go to the zoo.
PĐ: Ba and Lan doesn't sometimes go to the zoo.
NV: Do Ba and Lan sometimes go to the zoo?
3. I usually play sports
PĐ: I don't usually play sports.
NV: Do you usually play sports?
4. He is listening to music now
PĐ: He isn't listening to music now.
NV: Is he listening to music now?
5. She sometimes has a picnic.
PĐ: She doesn't sometimes have a picnic.
NV: Does she sometimes have a picnic?
6. They often go camping on Sundays.
PĐ: They don't often go camping on Sundays.
NV: Do they often go camping on Sundays?
7, Nam often goes to the park.
PĐ: Nam doesn't often go to the park.
NV: Does Nam often go to the park?
8. She always has some orange juice after lunch.
PĐ: She doesn't always have some orange juice after lunch.
NV: Does she always have some orange juice after lunch.
9. We sometimes have some bananas.
PĐ: We don't sometimes have some bananas.
NV: Do you sometimes have some bananas?
10. Miss Thu usually eats some vegetables.
PĐ: Miss Thu doesn't usually eat some vegetables.
NV: Does Miss Thu usually eat some vegetables?