At the party，John made up a joke，________ people burst out laughing.
#75607
A
on which
B
by which
C
at which
D
from which
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I showed several old friends of mine around the city, _________ surprise，the changes had been so great.
#77094
A
whose
B
to whose
C
which
D
to which
----Do you have anything to say for yourselves?----Yes, there is one point______ we must insist on.
#76215
A
why
B
where
C
how
D
that
Before you resign you should consider the effect _______ will have on your family.
#76281
A
it
B
one
C
who
D
what