---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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April 23 is stated as World Book Day, an important date for literature around the world, _______ Shakespeare was born and died.
#75118
A
where
B
when
C
which
D
why
The three backpackers finally reached the top of Mount Huangshan, ________ they could enjoy the breathtaking sights to their heart's content.
#75309
A
when
B
where
C
why
D
how
I shall never forget those years ____ I lived in the country with the farmers, ____ has a great effect on my life.
#77687
A
that; which
B
when; which
C
which; that
D
when; as
He is the very lecturer, experience impressed us greatly at the conference yesterday.
#77529
A
who
B
whom
C
which
D
whose
Remember that there is still one point ____ we must make clear at the conference tomorrow.
#78231
A
where
B
why
C
when
D
that