black

单项选择题

Was it in 1969 ______ the American astronaut succeed ______ landing on the moon
A．when; on
B．that; on
C．which; in
D．that; in
相关考题

All Rights Reserved 版权所有©求知题库网库(csqiuzhi.com)

备案号：湘ICP备14005140号-1

经营许可证号：湘B2-20140064