___ 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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So, ________ the government has a good system of control or can educate the people, the forests will slowly disappear.
#33394
A
as long as
B
when
C
unless
D
every time
Is this tourist attraction you paid a visit to several days ago?
#30600
A
that
B
which
C
the one
D
where
— Have you told Mary the good news that she was admitted into Shandong University?— Yes. I told her ________I saw her this morning.
#30176
A
while
B
the moment
C
until
D
suddenly
They are talking _____ they had been friends for years, while in fact they have known each other for only two hours.
#30877
A
even though
B
as though
C
now that
D
until
— Why didn’t you watch the program “Where are we going, Dad?”? — It was because something was wrong with the web TV _______ too many users were receiving it.
#30361
A
which
B
that
C
through that
D
through which