It took them         time to finish the challenging task.
#71201
A
a number of
B
a lot
C
a great deal of
D
a good many
推荐题目
The decision has been made and I have got to     it. 
#70706
A
stand in
B
stand for
C
stand by
D
stand out
The ship was _____ in a storm off Jamaica.
#84107
A
drowned
B
sunk
C
wrecked
D
submitted