Shenzhou-VIII has docked with Tiangong-I successfully, _____ the start of the establishment of China's own space station.
A.marked | B.to mark | C.marking | D.having marked |
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Shenzhou-VIII has docked with Tiangong-I successfully, _____ the start of the establishment of China's own space station.
A.marked | B.to mark | C.marking | D.having marked |