________ there are living creatures in the outer space as those on Earth hasn't been proved until now.
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A
How
B
When
C
Where
D
Whether
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____you have got a chance, you should make full use of it.
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A
After
B
As soon as
C
Although
D
Now that
There is a popular belief among the Europeans ________ chicken soup can help cure flu.
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A
what
B
who
C
that
D
where
—Do you think we can get there on time?—Yes,_________ the bus does not break down.
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A
even if
B
unless
C
until
D
so long as
It surprised us all ________ Kate made such big progress in this final exam.
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A
when
B
that
C
how
D
whether