In 1969 ____took his biggest step away from the earth. Americans first walked on the moon.This is certainly just a ____thought.
Tired and disappointed, the rescue team finally reached _____ used to be a village.
Noise is unpleasant, _____ when you are trying to sleep.
So hard-working _____ that he sets a good example to all the other classmates.
With more and more forests _____, many animals are facing the danger of dying out.
As we all know, China is a developing country, _____ attracting more and more foreigners.