A.I am here | B.I was here | C.me to be here | D.my being here |
A.spotted; and thus | B.discovered; thus | C.founded; so | D.seen; thus |
A.seeing | B.watching | C.reading | D.looking |
A.cost | B.took | C.spent | D.paid |
A.failed | B.failing | C.tried | D.trying |
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