___ we know some basic knowledge concerning AIDS, we can protect ourselves from being infected.
#33392
A
If only
B
Even if
C
So long as
D
Unless
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We _____ walk in the moonlight, taking about _____ we were interested in.
#33942
A
used to, all what
B
were used to, all what
C
used to, all that
D
were used to, what
I have heard a lot of good things about you I came back from abroad.
#30916
A
since
B
until
C
before
D
when
_________surprises us most is that she doesn’t even know _________the difference between the two lies.
#32018
A
What; where
B
All; which
C
What; that
D
That; where
―When will the visa be ready, sir?―______ everything goes well, you will get it in 14 workdays.
#30934
A
Although
B
As far as
C
Unless
D
As long as