问题
选择题
Was it in 1969 _______ the American astronauts succeeded ______ landing on th
e moon? [ ]
A when; on
B. that; on
C. when; in
D. that; in
答案
答案：D
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Was it in 1969 _______ the American astronauts succeeded ______ landing on the moon? [ ]
A when; on
B. that; on
C. when; in
D. that; in
答案：D