_______ in 1724, this business company is the oldest in my hometown.
#92745
A
Founded
B
Being founded
C
To found
D
Founding
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People are talking about the new play _______in two weeks.
#97419
A
to be put on
B
to put on
C
being put on
D
put on
 Though ______, many laws of nature exist.
#97974
A
not having been discovered
B
having not been discovered
C
not having discovered  
D
having not discovered