——Look! Who is the man in the picture（图片）?——I know.  ______ Zhou Xingchi.

I have a very clever dog. ________ name is Bobo. 

— Hi, Mary. Could you lend ______ your pen?— Sorry, I’m using it.

——Do you know the man wearing a pair of glasses?-------Yes.He’s a teacher of _________.He teaches _________history.

 —Is this your sister’s key, John？ —No, it isn’t. ______ is in the bag.