He made a promise ______ he would help me.
#68343
A
that
B
which
C
whether
D
why
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The news _____ he has passed the exam makes his parents very happy.
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A
that
B
which
C
whether
D
what
If it ______________ tomorrow, I would stay at home watching TV.
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A
should rain
B
rains
C
was to rain
D
will rain
(2013·浙江温州二模)Scientists have found evidence ________ global warming caused the world's first horses to become smaller nearly 50 million years ago.
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A
what
B
that
C
which
D
whether
. The book, _______ is blue, is mine.
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A
the cover of which
B
whose cover
C
of which the cover
D
all the above