A.being proved to be of significance | B.was proved to be significance |
C.proving to be significant | D.proved to be significant |
A.to see | B.seen | C.to be seen | D.seeing |
A.leaving | B.not to leave | C.to be left | D.being left |
A.to buy | B.to be bought | C.bought | D.being bought |
A.Considered | B.To be considered |
C.Having considered | D.Considering |
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