A.was happened | B.had happened |
C.happened | D.had been happened |
A.was fastened | B.fastening | C.to fasten | D.fastened |
A.are treating | B.are being treated | C.have treated | D.have been treated |
A.has been completed | B.has completed |
C.will have been completed | D.will have complete |
A.is painting | B.to paint | C.painting | D.painted |
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