Please don’t try to back out _____ everything has been arranged.
#31400
A
until
B
though
C
when
D
unless
推荐题目
Don’t you know that Australia was, as a matter of fact, _________ used to be a nation of prisoners!
#31157
A
where
B
what
C
which
D
that
Students are required to go out in couples, especially in the evenings, with friends ______ they get into trouble．
#32395
A
even if
B
if only
C
in case
D
when
----Do you think we can get there on time? ----Yes，_______ the truck doesn’t break down.
#31370
A
even if
B
so long as
C
until
D
unless
. Both look very strong and fast,_____ one runner speeds ahead and wins the race.
#80451
A
Therefore
B
And
C
But
D
While
There is no way of knowing why one man makes an important discovery ______ another man, also intelligent, fails.
#30143
A
since
B
if
C
as
D
while