题目列表(包括答案和解析)
In September 2008,China’s key milestone in space travel _____when Zhai Zhigang
conducted the first space walk.?
A.reached B.was reached?
C.has reached D.had been reached?
. In September 2008 , China’s key milestone in space travel_____when Zhai Zhigang conducted the first space walk.
A.reached |
B.was reached |
C.has reached |
D.had been reached |
. In September 2008 , China’s key milestone in space travel_____when Zhai Zhigang conducted the first space walk.
A. reached B. was reached C. has reached D . had been reached
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