It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.
#85141
A
which , that
B
that, where
C
whom, that
D
which, where
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When I tried to find _________that prevented so many people from taking part in the program, it seemed to me that there were two main reasons.
#85413
A
why it did
B
that it did
C
what it was
D
why it was
Was it in the grand closing ceremony __________ people bathed themselves in a sea of abundant happiness?
#85365
A
that
B
what
C
which
D
where
—Do you know ____ the 2011 Xiamen International Marathon was held?—On January 2．
#85317
A
when it was that
B
when was it that
C
what it was that
D
what was it that