---May I borrow your book Steve Jobs ? --- ________ you return it before Friday.
#30658
A
If only
B
Unless
C
On condition that
D
Now that
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the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks．
#31066
A
How
B
Because
C
If
D
While
Patience is a kind of quality—and that is ____ what it takes to do anything well.
#29992
A
what
B
which
C
that
D
How
The police need some more evidence ________they can make a conclusion.
#32061
A
since
B
before
C
after
D
until
My parents live in a small village. They always keep candles in the house ____ there is a power out.
#31944
A
if
B
unless
C
in case
D
so that
Catherine's mother doesn’t allow her to go anywhere outside the town ________ another member of the family is along.
#29951
A
without
B
if
C
unless
D
with