КАК просила - к одному предложению )))
Was
Sammy waiting for you when you got off the plane? (общий)
Sammy
was waiting for you when you got off the plane, wasn't he? (разделительный)Was
Sammy or Ann waiting for you when you got off the plane? (альтернативный)
Who
was waiting for you when you got off the plane? (к подлежащему?
Where
was Sammy waiting for you when you got off the plane? (спец)