Which is the correct option to complete the excerpt below?
The Legacy of Hartlepool Hall
' [...] Where did you get this recipe for roast chicken, my dear? Quite delicious.'
'It's the same thing we have every day, Daddy,' replied Annabel.
Is it really? It tastes quite different this week. Do you have a good cook at Hartlepool Hall, Edward? Is Mrs. Horton still there? But she ______ be. She ______ be dead by now. '
(TORDAY, Paul. The Legacy of Hartlepool Hall. London: Weidenfeld & Nicolson, 2012 . )