The old man has two sons，________is a soldier.
#67015
A
one of whom
B
both of them
C
all of whom
D
both of whom
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Thanks to the application of new farming methods,output is now six times _____it was before 2000.
#71709
A
that
B
what
C
which
D
how
The box is ________ heavy ________ I can’t lift it.
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A
too, to
B
very, that
C
so, that
D
too, that
People all over the world have a dream ______they will always live a peaceful life.
#67399
A
that
B
what
C
which
D
when
Some children want to challenge themselves by learning a language different from ______ their parents speak at home.
#71806
A
what
B
that
C
which
D
one
They put forward a lot of plans at the meeting, none of _______ were carried out in their work.
#70522
A
which
B
them
C
what
D
that