Ответ:
0. he / wash / the dirty floor? (√)
A: Has he washed the dirty floor?
B: Yes, he has.
1. they / ever / be / on TV? (v)
A: Have they ever been on TV?
B: Yes, they have.
2. she / buy / the vegetables? (√)
A: Has she bought the vegetables?
B: Yes, she has.
3. you / ever / eat / Mexican food? (X)
A: Have you ever eaten Mexican food?
B: No, I haven't.
