In 1863,US President Abraham Lincoln declared a national Tha

In 1863,US President Abraham Lincoln declared a national Thanksgiving Day.Thanksgiving _______ celebrated annually in America ever since.
A)has been
B)was
C）had been
D）is
-My room's empty!All my things are gone
-Oh,very sorry,sir.We thought you ______ the hotel this morning,so we took your suitcases downstairs.
A)leave
B)would have left
C)were leaving
D)have left