—Tom , where is Lucy ?—She ______ be in the library.But I’m not sure.
---Have you returned the book to the library ____? ---Yes, I have ____ returned it.
He is very ________today. Look, he is laughing _________.
We would like you ________ and we look forward _________ you.
There is a new bridge ________ the river in front of my house.
-- Sorry, I can’t speak Chinese. -- ________. I’ll teach you