-----How long do you think it will be _____man can finally solve the problem of cancer?------Well．it depends．
#30201
A
when
B
until
C
after
D
before
推荐题目
Sherry is in good shape physically _____ she doesn’t do enough sports.
#31292
A
if
B
even though
C
unless
D
as long as
The customs office is your luggage is inspected when you enter or leave a country.
#32869
A
where
B
when
C
why
D
who
English is a language shared by several diverse cultures，each of——uses it somewhat differently.
#30616
A
which
B
what
C
them
D
those
How foolish I was! _______ you have realised that, stop blaming yourself.
#30751
A
Now that
B
Unless
C
Although
D
Even if
I don’t think Susan will be sad but I’ll go and comfort her ______ she is.
#31517
A
in case
B
even though
C
as if
D
unless