Объяснение:
(-)You don't know the answer
(?)Do you know the answer?
(-)He hasn't breakfast at 8 o'clock
(?)Has he breakfast at 8 o'clock?
(+)Some schoolgirls wear uniform
(?)Do some schoolgirls wear uniform?
(+)She cut her husband's hair
(-)She doesn't cut her husband's hair
Можно лучший ответ?))
