28. The officer was very concerned ________ the latest development in the case because he was concerned ________ it.
#28038
A
about; in
B
for; about
C
with; for
D
in; with
推荐题目
I’m badly in need ______ your help.
#27707
A
of
B
for
C
from
D
at
____fire, all exits must be kept clear. 
#28429
A
In place of
B
Instead of
C
In case of
D
In spite of