1) The partner makes a mistake and falls on the ice!
(-)The partner doesn't make a mistake and fall on the ice!
(?)Does the partner make a mistake and fall on the ice?
2) We traveled a lot last year.
(-)We didn't travel a lot last year.
(?)Did we travel a lot last year?
3) Their guests will have lunch after the walk.
(-)Their guests won't have lunch after the walk.
(?)Will their guests have lunch after the walk?