When television was first introduced, the extent _______ it would affect society could not have been foreseen.
#76380
A
of which
B
of what
C
to which
D
in which
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Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped.
#76910
A
that; which
B
what; when
C
what; which
D
which; that
The next day is Thanksgiving Day,a special moment _________ we can express our gratitude, respect and love we feel all year round．
#75776
A
which
B
when
C
where
D
／
That weekend, I have more to tell you about, I ended up with a happy hike.
#75422
A
that
B
which
C
what
D
when