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Didn’t he know Had he known Hadn’t he known Did he know
the , / / , the the , the / , /
a; a a; the the; a the; the
no more than not more than less than more than
known supposed regarded considered
That, advancing This, advancing As, advanced It, advancing
to be known him to be known that to be known it to be known
who is known whom is known what is known which is known
was founded was found founded is found
the; / the; the /; the /; a
today; China's today's; China today's; China's today; China
who is known whom is known what is known which is known