What actually ______ the accident has not yet been determined. 
#73135
A
brought out
B
brought on
C
brought about
D
brought up
推荐题目
There will be a large number of people attending the lecture______today’s paper.
#80624
A
basing on    
B
according to
C
accounting for    
D
finding out
The hospital has a new system to help ______ the best service _______ the patients. 
#74806
A
provide; /
B
provide; to
C
provide; for
D
supply; /