You’ll miss the bus ___ you walk more quickly. 
#36288
A
unless
B
if
C
when
D
but
推荐题目
When the father heard from his son from abroad, he became ________.
#38532
A
exciting
B
happily
C
happiness
D
excited
 — Would you like      .      — No, thanks. I’m full.
#39415
A
something else
B
else something
C
anything else
D
else anything