.It took them half an hour to go           the crowd.
#48598
A
through
B
across
C
cross
D
out
推荐题目
She will be a doctor------ two months.
#49959
A
after
B
on
C
in
D
at
He goes to work _______ 8:00 ________ the weekend . 
#46468
A
in, in
B
at, in
C
at, on
D
on, on