In the forest we observed some trees ____the leaves were black with disease.
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A
where
B
of which
C
in which
D
whose
推荐题目
While shopping, you should make your own decision. You cannot simply depend on __________ is advertised on TV
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A
which
B
that
C
what
D
one
_____ you may have, you should gather your courage to face the challenge.
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A
However serious a problem.
B
What a serious problem.
C
However a serious problem.
D
What serious a problem.
It doesn’t matter to me _____I miss my train, because there’s another one later.
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A
that
B
if
C
unless
D
when