Bows and arrows have _______ been out of use.  
#24323
A
long after  
B
long before
C
before long
D
long since
推荐题目
He injured his leg. ______, he couldn’t play in the game.
#23904
A
Therefore
B
However
C
Besides
D
As well
The police turn the whole house _______ looking for clues.
#24249
A
upside down
B
out front
C
side by side
D
down to earth