In the past, people used_____ that the moon was too far away________. But now it is possible for man ______ there by spaceship.( )(本题2.0分)
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