---Who’s that? ---My aunt. ________ is a nurse in a hospital.

Mr. Smith teaches ________ science. We all like ________classes very much. 

This is my son.          is a student.

Is this       ruler?No,      is over there(在那边). 

—What a surprise! Harry used to get nervous because he couldn’t organize his ideas well _________ to express _________ clearly.—Great, havent’t you heard, “Where there is a will, there is a way.” Let’s give him a big hand.