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
Try not to buy too many things from abroad _________ it may cost a lot of money to bring them back.
#56309
A
because
B
so
C
so that
D
Although
I hate travelling by air_______ you usually have to wait for hours before the plane takes off.
#55620
A
because
B
though
C
until
D
Unless
