单项选择题
A. Pay the bills right away. B. Read the magazines very quickly. C. Sort the articles into categories for later reference. D. Stop buying magazines which you don’t have time to read.
A. 59. B. 72. C. 50. D. 17.
A. A disease. B. A cause of fatal plague. C. A substance in a flea’s legs. D. The substance that a flea lives on.