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takes; riding spent; to ride cost; walk took; to walk
takes is taking took will take
takes is taking took will take
takes；riding spent；to ride cost；walk took；to walk
deal with cut in cheer for run out
deal with cut in cheer for run out
work at work on work out work over
work at work on work out work over
takes is taking took will take
work at work on work out work over
spends took takes costs .
have read have been reading read are reading
What a complicated problem it was So complicated the problem was How complicated the problem was So complicated was the problem
A. an; the a; the an; a a; a
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