It was last night ________ I saw the comet.
#84749
A
the time
B
when
C
that
D
which
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The question that puzzled them is ____ they can get rid of the air pollution in the area.
#84871
A
how is it that
B
that is how
C
what is that
D
how it is that
Where was it  ______ you _______ our maths teacher?
#85164
A
where; came to
B
that; come across,
C
that; came across
D
where; come to