The number of books in the bookshop is about 10,000 and a number of them________about science.
A: Can you show me how to use the chopsticks? B: Sure. You can do it _____ this.
When Lily came to Shanghai, she_______ herself lonely .
Do you know what ______ the little boy?
Do you know _____
______ doesn’t matter ______ you come or not.