Learning to write is learning to think. You don’t know things clearly _________ you can writethem down.
#55292
A
unless
B
if
C
since
D
whether
推荐题目
---Sorry, I’m late for class again.---Is it ______ you stayed up last night?
#56457
A
why
B
how
C
because
D
when
—Hurry up! The bus is coming.—Wait a minute. Don’t cross the street the traffic lights are green.
#57340
A
until
B
after
C
while
D
since
