--- What on earth are the police busy with?--- They have been investigating how the train crash __________. 
#12250
A
came out
B
came across
C
came about
D
came up
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I _________ an old photo while __________ my album, which reminded me of my happy childhood.
#12584
A
came across, looking through
B
came about, looking up
C
came along, looking down upon
D
came up with, looking into
Kelly gave me a vivid ________ of her trip to Mount Tai after her return.
#11467
A
explanation
B
account
C
imagination
D
idea