The reason________he was late was ________he missed the train.
#79458
A
that; why
B
that; that
C
why; that
D
why; why
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What has not yet been announced is _____ the English contest will be held. I guess it may be held in the hall.
#79434
A
where
B
that
C
when
D
how
_____ is certain is ______ the mystery of Stonehenge has never been fully explained.
#79445
A
It, that
B
What, what
C
It, what
D
What, that
He kept yawning in class this morning. That is _____ he stayed up late doing his homework last night.
#79369
A
why
B
how
C
because
D
whether
Water，which seems so simple and common，is________makes life possible.
#79483
A
what
B
that
C
which
D
how
The question that puzzled them is ____ they can get rid of the air pollution in the area.
#79372
A
how is it that
B
that how
C
that it is how
D
how it is that