He realized she was crying ________ what he had sad.
#27104
A
because
B
because of
C
as
D
since
推荐题目
He is always helping people without expecting anything _______. 
#27045
A
in turn
B
in charge
C
in return
D
in trouble
Would you like some chocolate?--I’d like some, but I’m _____
#26011
A
on diet
B
in a diet
C
on a diet
D
in diet
I knew we would be friends ____ I met you on campus.
#26736
A
the first time
B
at the first time
C
for the first time
D
by the first time