A.seeing | B.watching | C.reading | D.looking |
A.cost | B.took | C.spent | D.paid |
A.failed | B.failing | C.tried | D.trying |
A.be | B.being | C.are | D.become |
A.to copy, to change | B.to copy, changing |
C.copying, to change | D.copying, changing |
A.get | B.getting | C.to get | D.got |
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