1.        By nine o'clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ___________ appeared a rare rainbow soon. 2.        
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A
of which
B
on which
C
from which
D
above which
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Is this the restaurant ___________ ?
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A
which you work
B
in which you work
C
for which you work
D
where you work in
I wonder how many years ago ___________.
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A
did your father retire
B
has your father retired
C
your father retired
D
your father has retired
Can you make sure ______the gold ring?
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A
where Alice had put
B
where had Alice put
C
where Alice has put
D
where has Alice put