We have only one Earth. It’s our common _.

In a __________ ,we can read many kinds of books ,but you must keep quiet there.

—Lily, could you please pass me the______? I want to cut the apple. —Sure, here you are. 

A：Do you like（喜欢）sports?B：Yes. We have many         ：basketball, ping-pong, soccer, and more.

— How is the _______ in Tiandong?— It’s getting worse and worse. There are always long lines of cars on roads.