A.cleaning up | B.being cleaned up | C.to clean up | D.clean up |
A.He has worked | B.Having worked |
C.He has been working | D.Working |
A.to burn, burning | B.a burn, burnt | C.burning, burned | D.burned, burning |
A.weighing | B.weighs | C.weighed | D.to weigh |
A.exposed | B.threatened | C.constructed | D.conserved |
A.Sleep | B.Sleeping | C.To sleep | D.Having slept |
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