ON JULY 20, 1969, ASTRONAUT NEIL ARMSTRONG
27. On July 20, 1969, Astronaut Neil Armstrong ... down oto the moon.
a. was stepping
b. stepped
c. has stepped
d. was stepped
27. On July 20, 1969, Astronaut Neil Armstrong ... down oto the moon.
a. was stepping
b. stepped
c. has stepped
d. was stepped