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Follow your teacher’s advice, __________ you will catch up with your classmates.
#34813
A
or
B
and
C
as
D
but
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Children depend on their parents for food and _______.
#34246
A
cloth
B
coat
C
dressing
D
clothing
 Don’t lose heart _________ you fail.
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A
until　
B
as if　
C
unless　　
D
even though
you can borrow my car     you promise not to drive too fast.
#30774
A
unless
B
even if
C
in case
D
as long as
-----Do you have a minute? I’ve got something to tell you. -----Ok, ______ you make it short.
#32456
A
now that
B
if only
C
so long as
D
every time
(2013·高考新课标全国卷Ⅰ)There’s no way of knowing why one man makes an important discovery________another man，also intelligent，fails.
#30672
A
since　　　　　
B
if
C
as
D
while