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The worsening of global warming, _____human activities are to blame, has led to frequently extreme weather.
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A
by which
B
for which
C
that
D
what
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Maria has written two novels, both of ________ have been made into television series.
#78703
A
them
B
that
C
which
D
what
He didn’t attend the meeting last night, _________ he doesn’t know our plan for the picnic.
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A
that’s why
B
that’s because
C
which is why
D
which is because
I have many foreign friends,         some are businessmen.
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A
of them
B
from which
C
who of
D
of whom
I usually do my homework after dinner until 10 pm, ______ is my bedtime.
#78678
A
who
B
what
C
which
D
that
Look! The dictionary , _____is red , is a birthday gift given by Father.
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A
which cover
B
the cover of which
C
the whose cover
D
that the cove