It was in 1969 ______ two Americans went to the moon by spaceship.
Willpower is a kind of quality, _____is _____it takes to do anything well.
_____ the fact that David failed in the competition ,his teacher thought he had done his best.
He was a much older tennis player, but he had a(n)_______over other players in experience.
There is even an animal whose tail will _____ so that it can run away if someone grabs it.
-----What were you up to when she dropped in?------I______ for a while and _____ some reading.