He bought a new building ______ top is different from others around.
#75520
A
what
B
which
C
that
D
whose
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He made another wonderful discovery, _______ of great importance to science. 
#76145
A
which I think is
B
which I think it
C
which I think it is
D
I think which is
Mr. Li lent me a book last week, _____I have learned a lot about earthquakes.
#76859
A
to which
B
for which
C
from which
D
with which