问题详情

In the past, people used______that the moon was too far away ______But now it is possible for man______there by spaceship.
A．to think , not to reach , to get
B．. to think , to reach , to get
C．to thinking , to reach , will get
D．thought , to reach , to get to请帮忙给出正确答案和分析，谢谢！