1. He bought me flowers yesterday.
(-) He didn't bye me flowers yesterday.
(?) Did he buy you flowers yesterday?
- Yes, he did/ No, he didn't.
2. They have walked for 2 hours.
(-) They haven't walked for 2 hours.
(?) Have they walked for 2 hours?
- Yes, they have/ No, they haven't.
3. She done the housework since 2010.
(-) She haven't done the housework since 2010.
(?) Have she done the housework since 2010?
- Yes, she have/ No, she haven't.
4. Lisa was a doctor last year.
(-) Lisa wasn't a doctor last year.
(?) Was Lisa a doctor last year
- Yes, she was/ No, she wasn't.