-Was the United State of America founded on July 4th, 1776? --You _________  be right but I need to check it in the history textbook anyway.
#62356
A
have to
B
must
C
may
D
will
推荐题目
The Spring Festival   in January or February.
#77617
A
celebrates
B
is celebrated
C
celebrated
D
was celebrated
--- My son is _____ to be seen. Where has he gone? --- I think he _____ in the building. 
#62906
A
nowhere; must be hiding
B
nowhere; must be hidden himself
C
anywhere; hides
D
everywhere; hides himself