1. Our uncle (play)plays badminton once a week.
(-) Our uncle doesn't play badminton once a week.
(?) Does our uncle play badminton once a week?
2. I (collect) have collected a lot of stamps from foreign countries so far.
(-) I haven't collected a lot of stamps from foreign countries so far.
(?) Have I collected a lot of stamps from foreign countries so far?
3. Hoa (visit) visited her parents last year.
(-) Hoa didn't visit her parents last year.
(?) Did Hoa visit her parents last year?