There are many trees on_______ side of the street, and_______ of the trees is still growing.
My grandfather have an old house in _____ they have lived for 70 years.
---It _____ ten years since we _____ last time. ---Yes. How time flies!
---Why don't you go hiking today? ----I prefer ______ at home to ______out because the weather is too bad.
---How many Chinese astronauts ______ into space since 2003? ----Twelve , including two women.
---Who helped you clean the classroom yesterday? ---_______. I did it all by myself.