–There is a story here in the paper about a 110-year-old man.--My goodness! I can’t imagine ______that old. .
The roommates have lived for three years and not once _____with each other.
My hometown, _____I spent my happy childhood, has changed a lot.
_____that the girl with an incurable disease would die soon, the boy decided to help her make her last days beautiful and meaningful.
Exploring _____space is exciting, yet dangerous. There is _____need for both robots and humans for space exploration.
Life is like time. Once _____, it never returns.