1. He bought a new bike _____ his son.
2. Lucy is the tallest girl _____ her class.
3. He had a new idea, but most of his classmates didn’t agree _____ him.
4. They signed up _____ the run and asked their relatives to support them.
5. There is plenty _____ rain this year.
6. Don’t laugh _____ the person who is _____ trouble.
7. I happened to meet Mr. Brown _____ the street.
8. Last year he took part _____ a 5-mile run.
9 . Last Sunday my sister went to Japan _____ plane. 10. I went to the airport to see her _____.
11. He tried his best to catch up ___ his class mates.