--- 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
推荐题目
He _______ cards with his friends, but now he _______ a walk after supper.
#14230
A
used to play; is used to having
B
is used to playing, used to have
C
used to play; is used to have
D
is used to playing; is used to have