Chinese astronaut Zhai Zhigang said hello back to the Earth, the nationa

Chinese astronaut Zhai Zhigang said hello back to the Earth, the national flag，after he came out of the spaceship Shenzhou Ⅶ.

A. was waving B. to wave C. waved D. waving

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Chinese astronaut Zhai Zhigang said hello back to the Earth, the nationa

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