Itwas1969
問題詳情：
It was 1969 ______ the American astronauts succeeded in landing on the moon.
A. that B. when C. on which D. which
【回答】
B
知識點：定語從句
題型：選擇題
問題詳情：
It was 1969 ______ the American astronauts succeeded in landing on the moon.
A. that B. when C. on which D. which
【回答】
B
知識點：定語從句
題型：選擇題
