The number of students in our school_________ more than 2000.
He only said it for _____, he didn’t really mean it .
It will take _____ years to make robots _____ the most unpleasant things .
My life _____ a lot_____ than it is now .
I predict he will be an engineer _____ten years because he is so interested in making things.
If there are _____trees, the air in our city will be _____ cleaner.