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he passed has he passed he did pass did he pass
that; / that ; that /;/ that; which
would pass passed should has passed would have passed
had passed passed would passed would have passed
that if that that if that whether
He worked He had worked Had he worked Did he work
that；／ that；that ／；／ that；which
take to take taking taken
that； ／ that； that ／； ／ that； which
had passed passed would pass would have passed
that; 不填 that; that 不填; 不填 that; which
concentrate on apply to put forward bring about
who had passed who have passed who has passed whom passed
while the moment until before
A. had reserved has reserved was reserving has been reserving
that; ／ that; that ／; ／ that; which
had he finished he finished has he finished did he finish
take to take taking taken
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