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opens is opened will open will be opened
had happened was happening has happened happened
to be called to call calling called
had happened was happening has happened happened
absorbed abused abolished adopted
the; a; the the; the;不填 the; a; an the; a; 不填
a; a the; the a; the the; a
not until; that until; that not until; when until; when
a; a the; the a; the the; a
in 17th - and 18th - century Europe. in the 19th century Europe. in the 19th century America. in the mid - 19th century Englan
the; a; the the; the; 不填 the; a; the the; a; 不填
before the Middle Ages around the 19th century in Greece or Rome machines to take tests
had happened was happening has happened happened
To found Founding Founded Having founded
advocated separated divided distributed
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