1) My three best friends live in the next house.
Do my three best friends live in the next house?Where do my three best friends live?Do my three best friends or four best friends live in the next house? My three best friends live in the next house, don't they?Who lives in the next house?2) They went to the seaside last year by plane.
Did they go to the seaside last year by plane?When did they go to the seaside by plane?Did they go to the seaside last year by plane or by train?They went to the seaside last year by plane, didn't they?Who went to the seaside last year by plane?
