---Three people got killed by two explosions.---When was __________?---________ was on April 15 __________ the 2013 Boston Marathon was being held．
#76612
A
that; It; when
B
this; This; that
C
this; It; when
D
that; It; that
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--- I want to know whether the day I am looking forward to will come today or tomorrow.--- Does that make any difference?
#75505
A
when
B
why
C
that
D
on which
Being a Chinese, I feel proud of my country and the contributions _________have been made to the world culture.
#76230
A
that
B
what
C
it
D
one
Beijing was attacked by such a terrible sandstorm __________few citizens has ever experienced before.
#77869
A
where
B
as
C
when
D
which
The city ______ we visited last year is the one _____the famous writer was born.
#77709
A
where, which
B
which, where
C
in which, that
D
where, where