The two astronauts said they would never forget the days ____they worked together in the Spaceship and the days ______.they spent together.
There are _________ doctors and nurses working hard in that hospital.
--- What's one fourth and a half, do you know? --- Yes, it's _________.
Now children, turn to page ________ and look at the _______ picture in Lesson Two.
Both of the two rulers are broken. I want to buy a _______ one.
December is the __________ month in year.