I find the lecture I attended in the Nanjing Normal University yesterday difficult _____. 
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A
understand
B
being understood
C
understood
D
to understand
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 With all the problems ________ as expected, the manager felt rather satisfied.
#90459
A
had been settled
B
being settle
C
settled
D
to settled
  The Olympic Games,________in 776 BC, did not include women players until 1912.
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A
first playing
B
to be first played
C
first played
D
to be first playing
They couldn’t stand        like that.
#94446
A
be treated
B
to treat
C
treating
D
being treated