Mary is crazy _______ playing the piano. 
#28078
A
at
B
in
C
about
D
of
推荐题目
He realized she was crying ________ his words.
#26246
A
because
B
because of
C
as
D
since
______ her hard work, she succeeded in passing the exam.
#28033
A
On account
B
Owing to
C
As a result
D
Because