A.to be tied | B.tied | C. being tied | D.tie |
A.facing; cleaned | B.faces; cleaning | C.faced; to be cleaned | D.facing; cleaning |
A.being offered | B.to offer | C.offering | D.offered |
A.to stare at | B.staring at | C.stare at | D.stared at |
A.change | B.changed | C.tochange | D.changing |
A.to base on | B.basing on | C.based on | D.base on |
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