Question 19: I have been trying to ring him up all day and I could not_____through. A. get B. take C. look D. hang Question 20: The water supply of the building was_____off because the pipes burst. A. handed B. held C. cut D. paid Question 21: How are you_____on with your work? - It is OK. A. calling B. getting C. laying D. looking Question 22: Did your son pass the university entrance examination? A. make up B. get along C. go up D. get through