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