—Peter, ______ is my friend, Lucy.— Hello! Nice to meet you! Lucy
When he walks______my desk,he knocked my books and pens _____the floor.
Chinese students have weeks in the summertime than American students.
---Daniel , remember to close the door before leaving the house.---_________.
You______buy Tom a present if he invites you to his birthday party.
This umbrella is____that one,but____than that one.