___ most of the earth’s surface is covered by water, fresh water is very rare and precious.
#31448
A
As
B
Although
C
If
D
Once
推荐题目
38.The task is hard, ___, the workers managed to finish it in time.
#80393
A
therefore
B
otherwise
C
however
D
yet
______you are always optimistic and self-confident, I can't wait to make friends with you.
#30869
A
Though
B
Since
C
While
D
So
—What do you think of it?—Well，it’s worth doing ________ the result is satisfactory.
#30224
A
the moment
B
as soon as
C
once
D
so long as
—Do you think we can get there on time? —Yes，_______ the truck doesn’t break down.
#32596
A
even if
B
unless
C
until
D
so long as
He made a mistake, but then he corrected the situation ________ it got worse.
#32998
A
until
B
when
C
before
D
as