--- What did Zhai Zhigang do while he was doing “walking” ?
--- He our national flag to the world.
A. in space; showed
B. in the space; showed
C. in space; brought
D. in the space; brought
网友回答
(答案→)A. in space; showed
B. in the space; showed
C. in space; brought
D. in the space; brought
解析：可联系答.案.网客服索取。