A.to collect | B.collected | C.being collected | D.Collecting |
A.examined | B.warned | C.forbidden | D.Defended |
A.to know | B.to be known | C.known | D.Knowing |
A.Write, can understand | B.Having written, can understand |
C.To write, could understand | D.Writing, will understand |
A.work | B.to work | C.working | D.worked |
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