Mai and Nam go to the movie twice a week.
(-)Mai and Nam don't go to the movie twice a week.
(?)Do Mai and Nam go to the movie twice a week?
His hoppy is reading book.
(-)His hobby isn't reading book.
(?)Is his hobby reading book?
I enjoy arranging flower.
(-)I don't enjoy arranging flower.
(?)Do you enjoy arranging flower?
The tip starts on Sunday morning.
(-)The tip doesn't start on Sunday morning.
(?)Does the tip start on Sunday morning?
He comes from Britain.
(-)He doesn't come from Britain.
(?)Does he come from Britain?