2.Ba and Lan sometimes go to the zoo

→ Ba and Lan don't sometimes  go to the zoo

→ Do Ba and Lan sometimes go to the zoo?

3 .I usually play sports

→ I don't usually play sports

→ Do you usually play sports?

4.He is listening to music now

→ He isn't listening to music now

→ Is he listening to music now?

5. She sometimes has a picnic

→ She doesn't have a picnic

→ Does She sometimes have a picnic?

6. They often go camping on Sundays

→ They don't often go camping on Sundays

→ Do they often go camping on Sundays?

7.Nam often goes to the park

→ Nam doesn't often go to the park

→ does Nam often go to the park?

8.She usually has some orange juice after lunch.

→ She doesn't usually have some orange juice after lunch.

→ Does she usually have some orange juice after lunch?

9.We sometimes have some bananas

→ We don't sometimes have some bananas

→ Do we sometimes have some bananas

10.Miss Thu usually eats some vegetables

→ Miss Thu doesn't usually eat some vegetables

→ Does Miss Thu usually eat some vegetables?